git.sesse.net Git - mlt/blob - src/modules/avformat/producer_avformat.c

   1 /*
   2  * producer_avformat.c -- avformat producer
   3  * Copyright (C) 2003-2009 Ushodaya Enterprises Limited
   4  * Author: Charles Yates <charles.yates@pandora.be>
   5  * Author: Dan Dennedy <dan@dennedy.org>
   6  * Much code borrowed from ffmpeg.c: Copyright (c) 2000-2003 Fabrice Bellard
   7  *
   8  * This library is free software; you can redistribute it and/or
   9  * modify it under the terms of the GNU Lesser General Public
  10  * License as published by the Free Software Foundation; either
  11  * version 2.1 of the License, or (at your option) any later version.
  12  *
  13  * This library is distributed in the hope that it will be useful,
  14  * but WITHOUT ANY WARRANTY; without even the implied warranty of
  15  * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
  16  * Lesser General Public License for more details.
  17  *
  18  * You should have received a copy of the GNU Lesser General Public
  19  * License along with this library; if not, write to the Free Software
  20  * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA  02111-1307  USA
  21  */
  22
  23 // MLT Header files
  24 #include <framework/mlt_producer.h>
  25 #include <framework/mlt_frame.h>
  26 #include <framework/mlt_profile.h>
  27 #include <framework/mlt_log.h>
  28 #include <framework/mlt_deque.h>
  29 #include <framework/mlt_factory.h>
  30 #include <framework/mlt_cache.h>
  31
  32 // ffmpeg Header files
  33 #include <libavformat/avformat.h>
  34 #ifdef SWSCALE
  35 #  include <libswscale/swscale.h>
  36 #endif
  37 #if LIBAVCODEC_VERSION_MAJOR > 52
  38 #include <libavutil/samplefmt.h>
  39 #elif (LIBAVCODEC_VERSION_INT >= ((51<<16)+(71<<8)+0))
  40 const char *avcodec_get_sample_fmt_name(int sample_fmt);
  41 #endif
  42 #ifdef VDPAU
  43 #  include <libavcodec/vdpau.h>
  44 #endif
  45 #if (LIBAVUTIL_VERSION_INT > ((50<<16)+(7<<8)+0))
  46 #  include <libavutil/pixdesc.h>
  47 #endif
  48
  49 // System header files
  50 #include <stdlib.h>
  51 #include <string.h>
  52 #include <pthread.h>
  53 #include <limits.h>
  54
  55 #if LIBAVUTIL_VERSION_INT < (50<<16)
  56 #define PIX_FMT_RGB32 PIX_FMT_RGBA32
  57 #define PIX_FMT_YUYV422 PIX_FMT_YUV422
  58 #endif
  59
  60 #if LIBAVCODEC_VERSION_MAJOR > 52
  61 #include <libavutil/opt.h>
  62 #define CODEC_TYPE_VIDEO      AVMEDIA_TYPE_VIDEO
  63 #define CODEC_TYPE_AUDIO      AVMEDIA_TYPE_AUDIO
  64 #define PKT_FLAG_KEY AV_PKT_FLAG_KEY
  65 #else
  66 #include <libavcodec/opt.h>
  67 #endif
  68
  69 #define POSITION_INITIAL (-2)
  70 #define POSITION_INVALID (-1)
  71
  72 #define MAX_AUDIO_STREAMS (10)
  73 #define MAX_VDPAU_SURFACES (10)
  74
  75 void avformat_lock( );
  76 void avformat_unlock( );
  77
  78 struct producer_avformat_s
  79 {
  80         mlt_producer parent;
  81         AVFormatContext *dummy_context;
  82         AVFormatContext *audio_format;
  83         AVFormatContext *video_format;
  84         AVCodecContext *audio_codec[ MAX_AUDIO_STREAMS ];
  85         AVCodecContext *video_codec;
  86         AVFrame *av_frame;
  87         ReSampleContext *audio_resample[ MAX_AUDIO_STREAMS ];
  88         mlt_position audio_expected;
  89         mlt_position video_expected;
  90         int audio_index;
  91         int video_index;
  92         double start_time;
  93         int first_pts;
  94         int last_position;
  95         int seekable;
  96         int current_position;
  97         mlt_position nonseek_position;
  98         int got_picture;
  99         int top_field_first;
 100         uint8_t *audio_buffer[ MAX_AUDIO_STREAMS ];
 101         size_t audio_buffer_size[ MAX_AUDIO_STREAMS ];
 102         uint8_t *decode_buffer[ MAX_AUDIO_STREAMS ];
 103         int audio_used[ MAX_AUDIO_STREAMS ];
 104         int audio_streams;
 105         int audio_max_stream;
 106         int total_channels;
 107         int max_channel;
 108         int max_frequency;
 109         unsigned int invalid_pts_counter;
 110         double resample_factor;
 111         mlt_cache image_cache;
 112         int colorspace;
 113         pthread_mutex_t video_mutex;
 114         pthread_mutex_t audio_mutex;
 115         mlt_deque apackets;
 116         mlt_deque vpackets;
 117         pthread_mutex_t packets_mutex;
 118 #ifdef VDPAU
 119         struct
 120         {
 121                 // from FFmpeg
 122                 struct vdpau_render_state render_states[MAX_VDPAU_SURFACES];
 123
 124                 // internal
 125                 mlt_deque deque;
 126                 int b_age;
 127                 int ip_age[2];
 128                 int is_decoded;
 129                 uint8_t *buffer;
 130         } *vdpau;
 131 #endif
 132 };
 133 typedef struct producer_avformat_s *producer_avformat;
 134
 135 // Forward references.
 136 static int list_components( char* file );
 137 static int producer_open( producer_avformat self, mlt_profile profile, const char *URL );
 138 static int producer_get_frame( mlt_producer producer, mlt_frame_ptr frame, int index );
 139 static void producer_avformat_close( producer_avformat );
 140 static void producer_close( mlt_producer parent );
 141 static void producer_set_up_video( producer_avformat self, mlt_frame frame );
 142 static void producer_set_up_audio( producer_avformat self, mlt_frame frame );
 143 static void apply_properties( void *obj, mlt_properties properties, int flags );
 144 static int video_codec_init( producer_avformat self, int index, mlt_properties properties );
 145 static void get_audio_streams_info( producer_avformat self );
 146
 147 #ifdef VDPAU
 148 #include "vdpau.c"
 149 #endif
 150
 151 /** Constructor for libavformat.
 152 */
 153
 154 mlt_producer producer_avformat_init( mlt_profile profile, const char *service, char *file )
 155 {
 156         if ( list_components( file ) )
 157                 return NULL;
 158
 159         mlt_producer producer = NULL;
 160
 161         // Check that we have a non-NULL argument
 162         if ( file )
 163         {
 164                 // Construct the producer
 165                 producer_avformat self = calloc( 1, sizeof( struct producer_avformat_s ) );
 166                 producer = calloc( 1, sizeof( struct mlt_producer_s ) );
 167
 168                 // Initialise it
 169                 if ( mlt_producer_init( producer, self ) == 0 )
 170                 {
 171                         self->parent = producer;
 172
 173                         // Get the properties
 174                         mlt_properties properties = MLT_PRODUCER_PROPERTIES( producer );
 175
 176                         // Set the resource property (required for all producers)
 177                         mlt_properties_set( properties, "resource", file );
 178
 179                         // Register transport implementation with the producer
 180                         producer->close = (mlt_destructor) producer_close;
 181
 182                         // Register our get_frame implementation
 183                         producer->get_frame = producer_get_frame;
 184
 185                         if ( strcmp( service, "avformat-novalidate" ) )
 186                         {
 187                                 // Open the file
 188                                 if ( producer_open( self, profile, file ) != 0 )
 189                                 {
 190                                         // Clean up
 191                                         mlt_producer_close( producer );
 192                                         producer = NULL;
 193                                 }
 194                                 else if ( self->seekable )
 195                                 {
 196                                         // Close the file to release resources for large playlists - reopen later as needed
 197                                         avformat_lock();
 198                                         if ( self->audio_format )
 199                                                 av_close_input_file( self->audio_format );
 200                                         self->audio_format = NULL;
 201                                         if ( self->video_format )
 202                                                 av_close_input_file( self->video_format );
 203                                         self->video_format = NULL;
 204                                         avformat_unlock();
 205                                 }
 206                         }
 207                         if ( producer )
 208                         {
 209                                 // Default the user-selectable indices from the auto-detected indices
 210                                 mlt_properties_set_int( properties, "audio_index",  self->audio_index );
 211                                 mlt_properties_set_int( properties, "video_index",  self->video_index );
 212 #ifdef VDPAU
 213                                 mlt_service_cache_set_size( MLT_PRODUCER_SERVICE(producer), "producer_avformat", 5 );
 214 #endif
 215                                 mlt_service_cache_put( MLT_PRODUCER_SERVICE(producer), "producer_avformat", self, 0, (mlt_destructor) producer_avformat_close );
 216                         }
 217                 }
 218         }
 219         return producer;
 220 }
 221
 222 int list_components( char* file )
 223 {
 224         int skip = 0;
 225
 226         // Report information about available demuxers and codecs as YAML Tiny
 227         if ( file && strstr( file, "f-list" ) )
 228         {
 229                 fprintf( stderr, "---\nformats:\n" );
 230                 AVInputFormat *format = NULL;
 231                 while ( ( format = av_iformat_next( format ) ) )
 232                         fprintf( stderr, "  - %s\n", format->name );
 233                 fprintf( stderr, "...\n" );
 234                 skip = 1;
 235         }
 236         if ( file && strstr( file, "acodec-list" ) )
 237         {
 238                 fprintf( stderr, "---\naudio_codecs:\n" );
 239                 AVCodec *codec = NULL;
 240                 while ( ( codec = av_codec_next( codec ) ) )
 241                         if ( codec->decode && codec->type == CODEC_TYPE_AUDIO )
 242                                 fprintf( stderr, "  - %s\n", codec->name );
 243                 fprintf( stderr, "...\n" );
 244                 skip = 1;
 245         }
 246         if ( file && strstr( file, "vcodec-list" ) )
 247         {
 248                 fprintf( stderr, "---\nvideo_codecs:\n" );
 249                 AVCodec *codec = NULL;
 250                 while ( ( codec = av_codec_next( codec ) ) )
 251                         if ( codec->decode && codec->type == CODEC_TYPE_VIDEO )
 252                                 fprintf( stderr, "  - %s\n", codec->name );
 253                 fprintf( stderr, "...\n" );
 254                 skip = 1;
 255         }
 256
 257         return skip;
 258 }
 259
 260 /** Find the default streams.
 261 */
 262
 263 static mlt_properties find_default_streams( producer_avformat self )
 264 {
 265         int i;
 266         char key[200];
 267         AVMetadataTag *tag = NULL;
 268         AVFormatContext *context = self->video_format;
 269         mlt_properties meta_media = MLT_PRODUCER_PROPERTIES( self->parent );
 270
 271         // Default to the first audio and video streams found
 272         self->audio_index = -1;
 273         self->video_index = -1;
 274
 275         mlt_properties_set_int( meta_media, "meta.media.nb_streams", context->nb_streams );
 276
 277         // Allow for multiple audio and video streams in the file and select first of each (if available)
 278         for( i = 0; i < context->nb_streams; i++ )
 279         {
 280                 // Get the codec context
 281                 AVStream *stream = context->streams[ i ];
 282                 if ( ! stream ) continue;
 283                 AVCodecContext *codec_context = stream->codec;
 284                 if ( ! codec_context ) continue;
 285                 AVCodec *codec = avcodec_find_decoder( codec_context->codec_id );
 286                 if ( ! codec ) continue;
 287
 288                 snprintf( key, sizeof(key), "meta.media.%d.stream.type", i );
 289
 290                 // Determine the type and obtain the first index of each type
 291                 switch( codec_context->codec_type )
 292                 {
 293                         case CODEC_TYPE_VIDEO:
 294                                 // Use first video stream
 295                                 if ( self->video_index < 0 )
 296                                         self->video_index = i;
 297                                 mlt_properties_set( meta_media, key, "video" );
 298                                 snprintf( key, sizeof(key), "meta.media.%d.stream.frame_rate", i );
 299 #if LIBAVFORMAT_VERSION_INT >= ((52<<16)+(42<<8)+0)
 300                                 double ffmpeg_fps = av_q2d( context->streams[ i ]->avg_frame_rate );
 301                                 if ( isnan( ffmpeg_fps ) || ffmpeg_fps == 0 )
 302                                         ffmpeg_fps = av_q2d( context->streams[ i ]->r_frame_rate );
 303                                 mlt_properties_set_double( meta_media, key, ffmpeg_fps );
 304 #else
 305                                 mlt_properties_set_double( meta_media, key, av_q2d( context->streams[ i ]->r_frame_rate ) );
 306 #endif
 307
 308 #if LIBAVFORMAT_VERSION_INT >= ((52<<16)+(21<<8)+0)
 309                                 snprintf( key, sizeof(key), "meta.media.%d.stream.sample_aspect_ratio", i );
 310                                 mlt_properties_set_double( meta_media, key, av_q2d( context->streams[ i ]->sample_aspect_ratio ) );
 311 #endif
 312                                 snprintf( key, sizeof(key), "meta.media.%d.codec.frame_rate", i );
 313                                 mlt_properties_set_double( meta_media, key, (double) codec_context->time_base.den /
 314                                                                                    ( codec_context->time_base.num == 0 ? 1 : codec_context->time_base.num ) );
 315                                 snprintf( key, sizeof(key), "meta.media.%d.codec.pix_fmt", i );
 316                                 mlt_properties_set( meta_media, key, avcodec_get_pix_fmt_name( codec_context->pix_fmt ) );
 317                                 snprintf( key, sizeof(key), "meta.media.%d.codec.sample_aspect_ratio", i );
 318                                 mlt_properties_set_double( meta_media, key, av_q2d( codec_context->sample_aspect_ratio ) );
 319 #if LIBAVCODEC_VERSION_INT > ((52<<16)+(28<<8)+0)
 320                                 snprintf( key, sizeof(key), "meta.media.%d.codec.colorspace", i );
 321                                 switch ( codec_context->colorspace )
 322                                 {
 323                                 case AVCOL_SPC_SMPTE240M:
 324                                         mlt_properties_set_int( meta_media, key, 240 );
 325                                         break;
 326                                 case AVCOL_SPC_BT470BG:
 327                                 case AVCOL_SPC_SMPTE170M:
 328                                         mlt_properties_set_int( meta_media, key, 601 );
 329                                         break;
 330                                 case AVCOL_SPC_BT709:
 331                                         mlt_properties_set_int( meta_media, key, 709 );
 332                                         break;
 333                                 default:
 334                                         // This is a heuristic Charles Poynton suggests in "Digital Video and HDTV"
 335                                         mlt_properties_set_int( meta_media, key, codec_context->width * codec_context->height > 750000 ? 709 : 601 );
 336                                         break;
 337                                 }
 338 #endif
 339                                 break;
 340                         case CODEC_TYPE_AUDIO:
 341                                 // Use first audio stream
 342                                 if ( self->audio_index < 0 )
 343                                         self->audio_index = i;
 344                                 mlt_properties_set( meta_media, key, "audio" );
 345 #if LIBAVCODEC_VERSION_MAJOR > 52
 346                                 snprintf( key, sizeof(key), "meta.media.%d.codec.sample_fmt", i );
 347                                 mlt_properties_set( meta_media, key, av_get_sample_fmt_name( codec_context->sample_fmt ) );
 348 #elif (LIBAVCODEC_VERSION_INT >= ((51<<16)+(71<<8)+0))
 349                                 snprintf( key, sizeof(key), "meta.media.%d.codec.sample_fmt", i );
 350                                 mlt_properties_set( meta_media, key, avcodec_get_sample_fmt_name( codec_context->sample_fmt ) );
 351 #endif
 352                                 snprintf( key, sizeof(key), "meta.media.%d.codec.sample_rate", i );
 353                                 mlt_properties_set_int( meta_media, key, codec_context->sample_rate );
 354                                 snprintf( key, sizeof(key), "meta.media.%d.codec.channels", i );
 355                                 mlt_properties_set_int( meta_media, key, codec_context->channels );
 356                                 break;
 357                         default:
 358                                 break;
 359                 }
 360 //              snprintf( key, sizeof(key), "meta.media.%d.stream.time_base", i );
 361 //              mlt_properties_set_double( meta_media, key, av_q2d( context->streams[ i ]->time_base ) );
 362                 snprintf( key, sizeof(key), "meta.media.%d.codec.name", i );
 363                 mlt_properties_set( meta_media, key, codec->name );
 364 #if (LIBAVCODEC_VERSION_INT >= ((51<<16)+(55<<8)+0))
 365                 snprintf( key, sizeof(key), "meta.media.%d.codec.long_name", i );
 366                 mlt_properties_set( meta_media, key, codec->long_name );
 367 #endif
 368                 snprintf( key, sizeof(key), "meta.media.%d.codec.bit_rate", i );
 369                 mlt_properties_set_int( meta_media, key, codec_context->bit_rate );
 370 //              snprintf( key, sizeof(key), "meta.media.%d.codec.time_base", i );
 371 //              mlt_properties_set_double( meta_media, key, av_q2d( codec_context->time_base ) );
 372 //              snprintf( key, sizeof(key), "meta.media.%d.codec.profile", i );
 373 //              mlt_properties_set_int( meta_media, key, codec_context->profile );
 374 //              snprintf( key, sizeof(key), "meta.media.%d.codec.level", i );
 375 //              mlt_properties_set_int( meta_media, key, codec_context->level );
 376
 377                 // Read Metadata
 378 #if LIBAVFORMAT_VERSION_INT >= ((52<<16)+(31<<8)+0)
 379                 while ( ( tag = av_metadata_get( stream->metadata, "", tag, AV_METADATA_IGNORE_SUFFIX ) ) )
 380                 {
 381                         if ( tag->value && strcmp( tag->value, "" ) && strcmp( tag->value, "und" ) )
 382                         {
 383                                 snprintf( key, sizeof(key), "meta.attr.%d.stream.%s.markup", i, tag->key );
 384                                 mlt_properties_set( meta_media, key, tag->value );
 385                         }
 386                 }
 387 #endif
 388         }
 389 #if LIBAVFORMAT_VERSION_INT >= ((52<<16)+(31<<8)+0)
 390         while ( ( tag = av_metadata_get( context->metadata, "", tag, AV_METADATA_IGNORE_SUFFIX ) ) )
 391         {
 392                 if ( tag->value && strcmp( tag->value, "" ) && strcmp( tag->value, "und" ) )
 393                 {
 394                         snprintf( key, sizeof(key), "meta.attr.%s.markup", tag->key );
 395                         mlt_properties_set( meta_media, key, tag->value );
 396                 }
 397         }
 398 #else
 399         if ( context->title && strcmp( context->title, "" ) )
 400                 mlt_properties_set(properties, "meta.attr.title.markup", context->title );
 401         if ( context->author && strcmp( context->author, "" ) )
 402                 mlt_properties_set(properties, "meta.attr.author.markup", context->author );
 403         if ( context->copyright && strcmp( context->copyright, "" ) )
 404                 mlt_properties_set(properties, "meta.attr.copyright.markup", context->copyright );
 405         if ( context->comment )
 406                 mlt_properties_set(properties, "meta.attr.comment.markup", context->comment );
 407         if ( context->album )
 408                 mlt_properties_set(properties, "meta.attr.album.markup", context->album );
 409         if ( context->year )
 410                 mlt_properties_set_int(properties, "meta.attr.year.markup", context->year );
 411         if ( context->track )
 412                 mlt_properties_set_int(properties, "meta.attr.track.markup", context->track );
 413 #endif
 414
 415         return meta_media;
 416 }
 417
 418 static inline int dv_is_pal( AVPacket *pkt )
 419 {
 420         return pkt->data[3] & 0x80;
 421 }
 422
 423 static int dv_is_wide( AVPacket *pkt )
 424 {
 425         int i = 80 /* block size */ *3 /* VAUX starts at block 3 */ +3 /* skip block header */;
 426
 427         for ( ; i < pkt->size; i += 5 /* packet size */ )
 428         {
 429                 if ( pkt->data[ i ] == 0x61 )
 430                 {
 431                         uint8_t x = pkt->data[ i + 2 ] & 0x7;
 432                         return ( x == 2 ) || ( x == 7 );
 433                 }
 434         }
 435         return 0;
 436 }
 437
 438 static double get_aspect_ratio( mlt_properties properties, AVStream *stream, AVCodecContext *codec_context, AVPacket *pkt )
 439 {
 440         double aspect_ratio = 1.0;
 441
 442         if ( codec_context->codec_id == CODEC_ID_DVVIDEO )
 443         {
 444                 if ( pkt )
 445                 {
 446                         if ( dv_is_pal( pkt ) )
 447                         {
 448                                 if ( dv_is_wide( pkt ) )
 449                                 {
 450                                         mlt_properties_set_int( properties, "meta.media.sample_aspect_num", 64 );
 451                                         mlt_properties_set_int( properties, "meta.media.sample_aspect_den", 45 );
 452                                 }
 453                                 else
 454                                 {
 455                                         mlt_properties_set_int( properties, "meta.media.sample_aspect_num", 16 );
 456                                         mlt_properties_set_int( properties, "meta.media.sample_aspect_den", 15 );
 457                                 }
 458                         }
 459                         else
 460                         {
 461                                 if ( dv_is_wide( pkt ) )
 462                                 {
 463                                         mlt_properties_set_int( properties, "meta.media.sample_aspect_num", 32 );
 464                                         mlt_properties_set_int( properties, "meta.media.sample_aspect_den", 27 );
 465                                 }
 466                                 else
 467                                 {
 468                                         mlt_properties_set_int( properties, "meta.media.sample_aspect_num", 8 );
 469                                         mlt_properties_set_int( properties, "meta.media.sample_aspect_den", 9 );
 470                                 }
 471                         }
 472                 }
 473                 else
 474                 {
 475                         AVRational ar =
 476 #if LIBAVFORMAT_VERSION_INT >= ((52<<16)+(21<<8)+0)
 477                                 stream->sample_aspect_ratio;
 478 #else
 479                                 codec_context->sample_aspect_ratio;
 480 #endif
 481                         // Override FFmpeg's notion of DV aspect ratios, which are
 482                         // based upon a width of 704. Since we do not have a normaliser
 483                         // that crops (nor is cropping 720 wide ITU-R 601 video always desirable)
 484                         // we just coerce the values to facilitate a passive behaviour through
 485                         // the rescale normaliser when using equivalent producers and consumers.
 486                         // = display_aspect / (width * height)
 487                         if ( ar.num == 10 && ar.den == 11 )
 488                         {
 489                                 // 4:3 NTSC
 490                                 mlt_properties_set_int( properties, "meta.media.sample_aspect_num", 8 );
 491                                 mlt_properties_set_int( properties, "meta.media.sample_aspect_den", 9 );
 492                         }
 493                         else if ( ar.num == 59 && ar.den == 54 )
 494                         {
 495                                 // 4:3 PAL
 496                                 mlt_properties_set_int( properties, "meta.media.sample_aspect_num", 16 );
 497                                 mlt_properties_set_int( properties, "meta.media.sample_aspect_den", 15 );
 498                         }
 499                         else if ( ar.num == 40 && ar.den == 33 )
 500                         {
 501                                 // 16:9 NTSC
 502                                 mlt_properties_set_int( properties, "meta.media.sample_aspect_num", 32 );
 503                                 mlt_properties_set_int( properties, "meta.media.sample_aspect_den", 27 );
 504                         }
 505                         else if ( ar.num == 118 && ar.den == 81 )
 506                         {
 507                                 // 16:9 PAL
 508                                 mlt_properties_set_int( properties, "meta.media.sample_aspect_num", 64 );
 509                                 mlt_properties_set_int( properties, "meta.media.sample_aspect_den", 45 );
 510                         }
 511                 }
 512         }
 513         else
 514         {
 515                 AVRational codec_sar = codec_context->sample_aspect_ratio;
 516                 AVRational stream_sar =
 517 #if LIBAVFORMAT_VERSION_INT >= ((52<<16)+(21<<8)+0)
 518                         stream->sample_aspect_ratio;
 519 #else
 520                         { 0, 1 };
 521 #endif
 522                 if ( codec_sar.num > 0 )
 523                 {
 524                         mlt_properties_set_int( properties, "meta.media.sample_aspect_num", codec_sar.num );
 525                         mlt_properties_set_int( properties, "meta.media.sample_aspect_den", codec_sar.den );
 526                 }
 527                 else if ( stream_sar.num > 0 )
 528                 {
 529                         mlt_properties_set_int( properties, "meta.media.sample_aspect_num", stream_sar.num );
 530                         mlt_properties_set_int( properties, "meta.media.sample_aspect_den", stream_sar.den );
 531                 }
 532                 else
 533                 {
 534                         mlt_properties_set_int( properties, "meta.media.sample_aspect_num", 1 );
 535                         mlt_properties_set_int( properties, "meta.media.sample_aspect_den", 1 );
 536                 }
 537         }
 538         AVRational ar = { mlt_properties_get_double( properties, "meta.media.sample_aspect_num" ), mlt_properties_get_double( properties, "meta.media.sample_aspect_den" ) };
 539         aspect_ratio = av_q2d( ar );
 540         mlt_properties_set_double( properties, "aspect_ratio", aspect_ratio );
 541
 542         return aspect_ratio;
 543 }
 544
 545 static char* parse_url( mlt_profile profile, const char* URL, AVInputFormat **format, AVFormatParameters *params )
 546 {
 547         if ( !URL ) return NULL;
 548
 549         const char *result = URL;
 550         char *protocol = strdup( URL );
 551         char *url = strchr( protocol, ':' );
 552
 553         // Only if there is not a protocol specification that avformat can handle
 554 #if LIBAVFORMAT_VERSION_MAJOR > 52
 555         if ( url && avio_check( URL, 0 ) < 0 )
 556 #else
 557         if ( url && !url_exist( URL ) )
 558 #endif
 559         {
 560                 // Truncate protocol string
 561                 url[0] = 0;
 562                 mlt_log_debug( NULL, "%s: protocol=%s resource=%s\n", __FUNCTION__, protocol, url + 1 );
 563
 564                 // Lookup the format
 565                 *format = av_find_input_format( protocol );
 566
 567                 // Eat the format designator
 568                 result = ++url;
 569
 570                 if ( *format )
 571                 {
 572                         // These are required by video4linux2 (defaults)
 573                         params->width = profile->width;
 574                         params->height = profile->height;
 575                         if ( !strstr( URL, "&frame_rate" ) )
 576                                 params->time_base = (AVRational){ profile->frame_rate_den, profile->frame_rate_num };
 577                         params->channels = 2;
 578                         params->sample_rate = 48000;
 579
 580                         // Parse out params
 581                         url = strchr( url, '?' );
 582                         while ( url )
 583                         {
 584                                 url[0] = 0;
 585                                 char *name = strdup( ++url );
 586                                 char *value = strchr( name, ':' );
 587                                 if ( value )
 588                                 {
 589                                         value[0] = 0;
 590                                         value++;
 591                                         char *t = strchr( value, '&' );
 592                                         if ( t )
 593                                                 t[0] = 0;
 594                                         if ( !strcmp( name, "frame_rate" ) )
 595                                                 params->time_base.den = atoi( value );
 596                                         else if ( !strcmp( name, "frame_rate_base" ) )
 597                                                 params->time_base.num = atoi( value );
 598                                         else if ( !strcmp( name, "sample_rate" ) )
 599                                                 params->sample_rate = atoi( value );
 600                                         else if ( !strcmp( name, "channel" ) )
 601                                                 params->channel = atoi( value );
 602                                         else if ( !strcmp( name, "channels" ) )
 603                                                 params->channels = atoi( value );
 604 #if (LIBAVUTIL_VERSION_INT > ((50<<16)+(7<<8)+0))
 605                                         else if ( !strcmp( name, "pix_fmt" ) )
 606                                                 params->pix_fmt = av_get_pix_fmt( value );
 607 #endif
 608                                         else if ( !strcmp( name, "width" ) )
 609                                                 params->width = atoi( value );
 610                                         else if ( !strcmp( name, "height" ) )
 611                                                 params->height = atoi( value );
 612                                         else if ( !strcmp( name, "standard" ) )
 613                                                 params->standard = strdup( value );
 614                                 }
 615                                 free( name );
 616                                 url = strchr( url, '&' );
 617                         }
 618                 }
 619         }
 620         result = strdup( result );
 621         free( protocol );
 622         return result;
 623 }
 624
 625 static int get_basic_info( producer_avformat self, mlt_profile profile, const char *filename )
 626 {
 627         int error = 0;
 628
 629         // Get the properties
 630         mlt_properties properties = MLT_PRODUCER_PROPERTIES( self->parent );
 631
 632         AVFormatContext *format = self->video_format;
 633
 634         // We will treat everything with the producer fps.
 635         // TODO: make this more flexible.
 636         double fps = mlt_profile_fps( profile );
 637
 638         // Get the duration
 639         if ( !mlt_properties_get_int( properties, "_length_computed" ) )
 640         {
 641                 // The _length_computed flag prevents overwriting explicity set length/out/eof properties
 642                 // when producer_open is called after initial call when restoring or reseting the producer.
 643                 if ( format->duration != AV_NOPTS_VALUE )
 644                 {
 645                         // This isn't going to be accurate for all formats
 646                         mlt_position frames = ( mlt_position )( ( ( double )format->duration / ( double )AV_TIME_BASE ) * fps );
 647                         mlt_properties_set_position( properties, "out", frames - 1 );
 648                         mlt_properties_set_position( properties, "length", frames );
 649                         mlt_properties_set_int( properties, "_length_computed", 1 );
 650                 }
 651                 else
 652                 {
 653                         // Set live sources to run forever
 654                         mlt_properties_set_position( properties, "length", INT_MAX );
 655                         mlt_properties_set_position( properties, "out", INT_MAX - 1 );
 656                         mlt_properties_set( properties, "eof", "loop" );
 657                         mlt_properties_set_int( properties, "_length_computed", 1 );
 658                 }
 659         }
 660
 661         if ( format->start_time != AV_NOPTS_VALUE )
 662                 self->start_time = format->start_time;
 663
 664         // Check if we're seekable
 665         // avdevices are typically AVFMT_NOFILE and not seekable
 666         self->seekable = !format->iformat || !( format->iformat->flags & AVFMT_NOFILE );
 667         if ( format->pb )
 668         {
 669                 // protocols can indicate if they support seeking
 670 #if LIBAVFORMAT_VERSION_MAJOR > 52
 671                 self->seekable = format->pb->seekable;
 672 #else
 673                 URLContext *uc = url_fileno( format->pb );
 674                 if ( uc )
 675                         self->seekable = !uc->is_streamed;
 676 #endif
 677         }
 678         if ( self->seekable )
 679         {
 680                 // Do a more rigourous test of seekable on a disposable context
 681                 self->seekable = av_seek_frame( format, -1, self->start_time, AVSEEK_FLAG_BACKWARD ) >= 0;
 682                 mlt_properties_set_int( properties, "seekable", self->seekable );
 683                 self->dummy_context = format;
 684                 av_open_input_file( &self->video_format, filename, NULL, 0, NULL );
 685                 format = self->video_format;
 686                 av_find_stream_info( format );
 687         }
 688
 689         // Fetch the width, height and aspect ratio
 690         if ( self->video_index != -1 )
 691         {
 692                 AVCodecContext *codec_context = format->streams[ self->video_index ]->codec;
 693                 mlt_properties_set_int( properties, "width", codec_context->width );
 694                 mlt_properties_set_int( properties, "height", codec_context->height );
 695
 696                 if ( codec_context->codec_id == CODEC_ID_DVVIDEO )
 697                 {
 698                         // Fetch the first frame of DV so we can read it directly
 699                         AVPacket pkt;
 700                         int ret = 0;
 701                         while ( ret >= 0 )
 702                         {
 703                                 ret = av_read_frame( format, &pkt );
 704                                 if ( ret >= 0 && pkt.stream_index == self->video_index && pkt.size > 0 )
 705                                 {
 706                                         get_aspect_ratio( properties, format->streams[ self->video_index ], codec_context, &pkt );
 707                                         break;
 708                                 }
 709                         }
 710                 }
 711                 else
 712                 {
 713                         get_aspect_ratio( properties, format->streams[ self->video_index ], codec_context, NULL );
 714                 }
 715
 716 #ifdef SWSCALE
 717                 // Verify that we can convert this to YUV 4:2:2
 718                 // TODO: we can now also return RGB and RGBA and quite possibly more in the future.
 719                 struct SwsContext *context = sws_getContext( codec_context->width, codec_context->height, codec_context->pix_fmt,
 720                         codec_context->width, codec_context->height, PIX_FMT_YUYV422, SWS_BILINEAR, NULL, NULL, NULL);
 721                 if ( context )
 722                         sws_freeContext( context );
 723                 else
 724                         error = 1;
 725 #endif
 726         }
 727         return error;
 728 }
 729
 730 /** Open the file.
 731 */
 732
 733 static int producer_open( producer_avformat self, mlt_profile profile, const char *URL )
 734 {
 735         // Return an error code (0 == no error)
 736         int error = 0;
 737         mlt_properties properties = MLT_PRODUCER_PROPERTIES( self->parent );
 738
 739         // Lock the service
 740         pthread_mutex_init( &self->audio_mutex, NULL );
 741         pthread_mutex_init( &self->video_mutex, NULL );
 742         pthread_mutex_init( &self->packets_mutex, NULL );
 743         mlt_events_block( properties, self->parent );
 744         pthread_mutex_lock( &self->audio_mutex );
 745         pthread_mutex_lock( &self->video_mutex );
 746
 747         // Parse URL
 748         AVInputFormat *format = NULL;
 749         AVFormatParameters params;
 750         memset( &params, 0, sizeof(params) );
 751         char *filename = parse_url( profile, URL, &format, &params );
 752
 753         // Now attempt to open the file or device with filename
 754         error = av_open_input_file( &self->video_format, filename, format, 0, &params ) < 0;
 755         if ( error )
 756                 // If the URL is a network stream URL, then we probably need to open with full URL
 757                 error = av_open_input_file( &self->video_format, URL, format, 0, &params ) < 0;
 758
 759         // Set MLT properties onto video AVFormatContext
 760         if ( !error && self->video_format )
 761         {
 762                 apply_properties( self->video_format, properties, AV_OPT_FLAG_DECODING_PARAM );
 763 #if LIBAVFORMAT_VERSION_MAJOR > 52
 764                 if ( self->video_format->iformat && self->video_format->iformat->priv_class && self->video_format->priv_data )
 765                         apply_properties( self->video_format->priv_data, properties, AV_OPT_FLAG_DECODING_PARAM );
 766 #endif
 767         }
 768
 769         // Cleanup AVFormatParameters
 770         if ( params.standard )
 771                 free( (void*) params.standard );
 772
 773         // If successful, then try to get additional info
 774         if ( !error && self->video_format )
 775         {
 776                 // Get the stream info
 777                 error = av_find_stream_info( self->video_format ) < 0;
 778
 779                 // Continue if no error
 780                 if ( !error && self->video_format )
 781                 {
 782                         // Find default audio and video streams
 783                         find_default_streams( self );
 784                         error = get_basic_info( self, profile, filename );
 785
 786                         // Initialize position info
 787                         self->first_pts = -1;
 788                         self->last_position = POSITION_INITIAL;
 789
 790                         // We're going to cheat here - for seekable A/V files, we will have separate contexts
 791                         // to support independent seeking of audio from video.
 792                         // TODO: Is this really necessary?
 793                         if ( self->audio_index != -1 && self->video_index != -1 )
 794                         {
 795                                 if ( self->seekable )
 796                                 {
 797                                         // And open again for our audio context
 798                                         av_open_input_file( &self->audio_format, filename, NULL, 0, NULL );
 799                                         apply_properties( self->audio_format, properties, AV_OPT_FLAG_DECODING_PARAM );
 800 #if LIBAVFORMAT_VERSION_MAJOR > 52
 801                                         if ( self->audio_format->iformat && self->audio_format->iformat->priv_class && self->audio_format->priv_data )
 802                                                 apply_properties( self->audio_format->priv_data, properties, AV_OPT_FLAG_DECODING_PARAM );
 803 #endif
 804                                         av_find_stream_info( self->audio_format );
 805                                 }
 806                                 else
 807                                 {
 808                                         self->audio_format = self->video_format;
 809                                 }
 810                         }
 811                         else if ( self->audio_index != -1 )
 812                         {
 813                                 // We only have an audio context
 814                                 self->audio_format = self->video_format;
 815                                 self->video_format = NULL;
 816                         }
 817                         else if ( self->video_index == -1 )
 818                         {
 819                                 // Something has gone wrong
 820                                 error = -1;
 821                         }
 822                         if ( self->audio_format && !self->audio_streams )
 823                                 get_audio_streams_info( self );
 824                 }
 825         }
 826         if ( filename )
 827                 free( filename );
 828         if ( !error )
 829         {
 830                 self->apackets = mlt_deque_init();
 831                 self->vpackets = mlt_deque_init();
 832         }
 833
 834         if ( self->dummy_context )
 835         {
 836                 av_close_input_file( self->dummy_context );
 837                 self->dummy_context = NULL;
 838         }
 839
 840         // Unlock the service
 841         pthread_mutex_unlock( &self->audio_mutex );
 842         pthread_mutex_unlock( &self->video_mutex );
 843         mlt_events_unblock( properties, self->parent );
 844
 845         return error;
 846 }
 847
 848 static void reopen_video( producer_avformat self, mlt_producer producer )
 849 {
 850         mlt_properties properties = MLT_PRODUCER_PROPERTIES( producer );
 851         mlt_service_lock( MLT_PRODUCER_SERVICE( producer ) );
 852         pthread_mutex_lock( &self->audio_mutex );
 853
 854         if ( self->video_codec )
 855         {
 856                 avformat_lock();
 857                 avcodec_close( self->video_codec );
 858                 avformat_unlock();
 859         }
 860         self->video_codec = NULL;
 861         if ( self->dummy_context )
 862                 av_close_input_file( self->dummy_context );
 863         self->dummy_context = NULL;
 864         if ( self->video_format )
 865                 av_close_input_file( self->video_format );
 866         self->video_format = NULL;
 867
 868         int audio_index = self->audio_index;
 869         int video_index = self->video_index;
 870
 871         pthread_mutex_unlock( &self->audio_mutex );
 872         pthread_mutex_unlock( &self->video_mutex );
 873         producer_open( self, mlt_service_profile( MLT_PRODUCER_SERVICE(producer) ),
 874                 mlt_properties_get( properties, "resource" ) );
 875         pthread_mutex_lock( &self->video_mutex );
 876         pthread_mutex_lock( &self->audio_mutex );
 877
 878         self->audio_index = audio_index;
 879         if ( self->video_format && video_index > -1 )
 880         {
 881                 self->video_index = video_index;
 882                 video_codec_init( self, video_index, properties );
 883         }
 884
 885         pthread_mutex_unlock( &self->audio_mutex );
 886         mlt_service_unlock( MLT_PRODUCER_SERVICE( producer ) );
 887 }
 888
 889 static int seek_video( producer_avformat self, mlt_position position,
 890         int req_position, int must_decode, int use_new_seek, int *ignore )
 891 {
 892         mlt_producer producer = self->parent;
 893         int paused = 0;
 894
 895         if ( self->seekable && ( position != self->video_expected || self->last_position < 0 ) )
 896         {
 897                 mlt_properties properties = MLT_PRODUCER_PROPERTIES( producer );
 898
 899                 // Fetch the video format context
 900                 AVFormatContext *context = self->video_format;
 901
 902                 // Get the video stream
 903                 AVStream *stream = context->streams[ self->video_index ];
 904
 905                 // Get codec context
 906                 AVCodecContext *codec_context = stream->codec;
 907
 908                 // We may want to use the source fps if available
 909                 double source_fps = mlt_properties_get_double( properties, "meta.media.frame_rate_num" ) /
 910                         mlt_properties_get_double( properties, "meta.media.frame_rate_den" );
 911
 912                 if ( self->av_frame && position + 1 == self->video_expected )
 913                 {
 914                         // We're paused - use last image
 915                         paused = 1;
 916                 }
 917                 else if ( !self->seekable && position > self->video_expected && ( position - self->video_expected ) < 250 )
 918                 {
 919                         // Fast forward - seeking is inefficient for small distances - just ignore following frames
 920                         *ignore = ( int )( ( position - self->video_expected ) / mlt_producer_get_fps( producer ) * source_fps );
 921                         codec_context->skip_loop_filter = AVDISCARD_NONREF;
 922                 }
 923                 else if ( self->seekable && ( position < self->video_expected || position - self->video_expected >= 12 || self->last_position < 0 ) )
 924                 {
 925                         if ( use_new_seek && self->last_position == POSITION_INITIAL )
 926                         {
 927                                 // find first key frame
 928                                 int ret = 0;
 929                                 int toscan = 100;
 930                                 AVPacket pkt;
 931
 932                                 while ( ret >= 0 && toscan-- > 0 )
 933                                 {
 934                                         ret = av_read_frame( context, &pkt );
 935                                         if ( ret >= 0 && ( pkt.flags & PKT_FLAG_KEY ) && pkt.stream_index == self->video_index )
 936                                         {
 937                                                 mlt_log_verbose( MLT_PRODUCER_SERVICE(producer), "first_pts %"PRId64" dts %"PRId64" pts_dts_delta %d\n", pkt.pts, pkt.dts, (int)(pkt.pts - pkt.dts) );
 938                                                 self->first_pts = pkt.pts;
 939                                                 toscan = 0;
 940                                         }
 941                                         av_free_packet( &pkt );
 942                                 }
 943                                 // Rewind
 944                                 av_seek_frame( context, -1, 0, AVSEEK_FLAG_BACKWARD );
 945                         }
 946
 947                         // Calculate the timestamp for the requested frame
 948                         int64_t timestamp;
 949                         if ( use_new_seek )
 950                         {
 951                                 timestamp = ( req_position - 0.1 / source_fps ) /
 952                                         ( av_q2d( stream->time_base ) * source_fps );
 953                                 mlt_log_verbose( MLT_PRODUCER_SERVICE(producer), "pos %d pts %"PRId64" ", req_position, timestamp );
 954                                 if ( self->first_pts > 0 )
 955                                         timestamp += self->first_pts;
 956                                 else if ( context->start_time != AV_NOPTS_VALUE )
 957                                         timestamp += context->start_time;
 958                         }
 959                         else
 960                         {
 961                                 timestamp = ( int64_t )( ( double )req_position / source_fps * AV_TIME_BASE + 0.5 );
 962                                 if ( context->start_time != AV_NOPTS_VALUE )
 963                                         timestamp += context->start_time;
 964                         }
 965                         if ( must_decode )
 966                                 timestamp -= AV_TIME_BASE;
 967                         if ( timestamp < 0 )
 968                                 timestamp = 0;
 969                         mlt_log_debug( MLT_PRODUCER_SERVICE(producer), "seeking timestamp %"PRId64" position %d expected %d last_pos %d\n",
 970                                 timestamp, position, self->video_expected, self->last_position );
 971
 972                         // Seek to the timestamp
 973                         if ( use_new_seek )
 974                         {
 975                                 codec_context->skip_loop_filter = AVDISCARD_NONREF;
 976                                 av_seek_frame( context, self->video_index, timestamp, AVSEEK_FLAG_BACKWARD );
 977                         }
 978                         else if ( req_position > 0 || self->last_position <= 0 )
 979                         {
 980                                 av_seek_frame( context, -1, timestamp, AVSEEK_FLAG_BACKWARD );
 981                         }
 982                         else
 983                         {
 984                                 // Re-open video stream when rewinding to beginning from somewhere else.
 985                                 // This is rather ugly, and I prefer not to do it this way, but ffmpeg is
 986                                 // not reliably seeking to the first frame across formats.
 987                                 reopen_video( self, producer );
 988                         }
 989
 990                         // Remove the cached info relating to the previous position
 991                         self->current_position = POSITION_INVALID;
 992                         self->last_position = POSITION_INVALID;
 993                         av_freep( &self->av_frame );
 994
 995                         if ( use_new_seek )
 996                         {
 997                                 // flush any pictures still in decode buffer
 998                                 avcodec_flush_buffers( codec_context );
 999                         }
1000                 }
1001         }
1002         return paused;
1003 }
1004
1005 /** Convert a frame position to a time code.
1006 */
1007
1008 static double producer_time_of_frame( mlt_producer producer, mlt_position position )
1009 {
1010         return ( double )position / mlt_producer_get_fps( producer );
1011 }
1012
1013 // Collect information about all audio streams
1014
1015 static void get_audio_streams_info( producer_avformat self )
1016 {
1017         // Fetch the audio format context
1018         AVFormatContext *context = self->audio_format;
1019         int i;
1020
1021         for ( i = 0;
1022                   i < context->nb_streams;
1023                   i++ )
1024         {
1025                 if ( context->streams[i]->codec->codec_type == CODEC_TYPE_AUDIO )
1026                 {
1027                         AVCodecContext *codec_context = context->streams[i]->codec;
1028                         AVCodec *codec = avcodec_find_decoder( codec_context->codec_id );
1029
1030                         // If we don't have a codec and we can't initialise it, we can't do much more...
1031                         avformat_lock( );
1032                         if ( codec && avcodec_open( codec_context, codec ) >= 0 )
1033                         {
1034                                 self->audio_streams++;
1035                                 self->audio_max_stream = i;
1036                                 self->total_channels += codec_context->channels;
1037                                 if ( codec_context->channels > self->max_channel )
1038                                         self->max_channel = codec_context->channels;
1039                                 if ( codec_context->sample_rate > self->max_frequency )
1040                                         self->max_frequency = codec_context->sample_rate;
1041                                 avcodec_close( codec_context );
1042                         }
1043                         avformat_unlock( );
1044                 }
1045         }
1046         mlt_log_verbose( NULL, "[producer avformat] audio: total_streams %d max_stream %d total_channels %d max_channels %d\n",
1047                 self->audio_streams, self->audio_max_stream, self->total_channels, self->max_channel );
1048
1049         // Other audio-specific initializations
1050         self->resample_factor = 1.0;
1051 }
1052
1053 static void set_luma_transfer( struct SwsContext *context, int colorspace, int use_full_range )
1054 {
1055 #if defined(SWSCALE) && (LIBSWSCALE_VERSION_INT >= ((0<<16)+(7<<8)+2))
1056         int *coefficients;
1057         const int *new_coefficients;
1058         int full_range;
1059         int brightness, contrast, saturation;
1060
1061         if ( sws_getColorspaceDetails( context, &coefficients, &full_range, &coefficients, &full_range,
1062                         &brightness, &contrast, &saturation ) != -1 )
1063         {
1064                 // Don't change these from defaults unless explicitly told to.
1065                 if ( use_full_range >= 0 )
1066                         full_range = use_full_range;
1067                 switch ( colorspace )
1068                 {
1069                 case 170:
1070                 case 470:
1071                 case 601:
1072                 case 624:
1073                         new_coefficients = sws_getCoefficients( SWS_CS_ITU601 );
1074                         break;
1075                 case 240:
1076                         new_coefficients = sws_getCoefficients( SWS_CS_SMPTE240M );
1077                         break;
1078                 case 709:
1079                         new_coefficients = sws_getCoefficients( SWS_CS_ITU709 );
1080                         break;
1081                 default:
1082                         new_coefficients = coefficients;
1083                         break;
1084                 }
1085                 sws_setColorspaceDetails( context, new_coefficients, full_range, new_coefficients, full_range,
1086                         brightness, contrast, saturation );
1087         }
1088 #endif
1089 }
1090
1091 static inline void convert_image( AVFrame *frame, uint8_t *buffer, int pix_fmt,
1092         mlt_image_format *format, int width, int height, int colorspace )
1093 {
1094 #ifdef SWSCALE
1095         int full_range = -1;
1096         int flags = SWS_BILINEAR | SWS_ACCURATE_RND;
1097
1098 #ifdef USE_MMX
1099         flags |= SWS_CPU_CAPS_MMX;
1100 #endif
1101 #ifdef USE_SSE
1102         flags |= SWS_CPU_CAPS_MMX2;
1103 #endif
1104
1105         if ( pix_fmt == PIX_FMT_RGB32 )
1106         {
1107                 *format = mlt_image_rgb24a;
1108                 struct SwsContext *context = sws_getContext( width, height, pix_fmt,
1109                         width, height, PIX_FMT_RGBA, flags, NULL, NULL, NULL);
1110                 AVPicture output;
1111                 avpicture_fill( &output, buffer, PIX_FMT_RGBA, width, height );
1112                 set_luma_transfer( context, colorspace, full_range );
1113                 sws_scale( context, (const uint8_t* const*) frame->data, frame->linesize, 0, height,
1114                         output.data, output.linesize);
1115                 sws_freeContext( context );
1116         }
1117         else if ( *format == mlt_image_yuv420p )
1118         {
1119                 struct SwsContext *context = sws_getContext( width, height, pix_fmt,
1120                         width, height, PIX_FMT_YUV420P, flags, NULL, NULL, NULL);
1121                 AVPicture output;
1122                 output.data[0] = buffer;
1123                 output.data[1] = buffer + width * height;
1124                 output.data[2] = buffer + ( 5 * width * height ) / 4;
1125                 output.linesize[0] = width;
1126                 output.linesize[1] = width >> 1;
1127                 output.linesize[2] = width >> 1;
1128                 set_luma_transfer( context, colorspace, full_range );
1129                 sws_scale( context, (const uint8_t* const*) frame->data, frame->linesize, 0, height,
1130                         output.data, output.linesize);
1131                 sws_freeContext( context );
1132         }
1133         else if ( *format == mlt_image_rgb24 )
1134         {
1135                 struct SwsContext *context = sws_getContext( width, height, pix_fmt,
1136                         width, height, PIX_FMT_RGB24, flags | SWS_FULL_CHR_H_INT, NULL, NULL, NULL);
1137                 AVPicture output;
1138                 avpicture_fill( &output, buffer, PIX_FMT_RGB24, width, height );
1139                 set_luma_transfer( context, colorspace, full_range );
1140                 sws_scale( context, (const uint8_t* const*) frame->data, frame->linesize, 0, height,
1141                         output.data, output.linesize);
1142                 sws_freeContext( context );
1143         }
1144         else if ( *format == mlt_image_rgb24a || *format == mlt_image_opengl )
1145         {
1146                 struct SwsContext *context = sws_getContext( width, height, pix_fmt,
1147                         width, height, PIX_FMT_RGBA, flags | SWS_FULL_CHR_H_INT, NULL, NULL, NULL);
1148                 AVPicture output;
1149                 avpicture_fill( &output, buffer, PIX_FMT_RGBA, width, height );
1150                 set_luma_transfer( context, colorspace, full_range );
1151                 sws_scale( context, (const uint8_t* const*) frame->data, frame->linesize, 0, height,
1152                         output.data, output.linesize);
1153                 sws_freeContext( context );
1154         }
1155         else
1156         {
1157                 struct SwsContext *context = sws_getContext( width, height, pix_fmt,
1158                         width, height, PIX_FMT_YUYV422, flags | SWS_FULL_CHR_H_INP, NULL, NULL, NULL);
1159                 AVPicture output;
1160                 avpicture_fill( &output, buffer, PIX_FMT_YUYV422, width, height );
1161                 set_luma_transfer( context, colorspace, full_range );
1162                 sws_scale( context, (const uint8_t* const*) frame->data, frame->linesize, 0, height,
1163                         output.data, output.linesize);
1164                 sws_freeContext( context );
1165         }
1166 #else
1167         if ( *format == mlt_image_yuv420p )
1168         {
1169                 AVPicture pict;
1170                 pict.data[0] = buffer;
1171                 pict.data[1] = buffer + width * height;
1172                 pict.data[2] = buffer + ( 5 * width * height ) / 4;
1173                 pict.linesize[0] = width;
1174                 pict.linesize[1] = width >> 1;
1175                 pict.linesize[2] = width >> 1;
1176                 img_convert( &pict, PIX_FMT_YUV420P, (AVPicture *)frame, pix_fmt, width, height );
1177         }
1178         else if ( *format == mlt_image_rgb24 )
1179         {
1180                 AVPicture output;
1181                 avpicture_fill( &output, buffer, PIX_FMT_RGB24, width, height );
1182                 img_convert( &output, PIX_FMT_RGB24, (AVPicture *)frame, pix_fmt, width, height );
1183         }
1184         else if ( format == mlt_image_rgb24a || format == mlt_image_opengl )
1185         {
1186                 AVPicture output;
1187                 avpicture_fill( &output, buffer, PIX_FMT_RGB32, width, height );
1188                 img_convert( &output, PIX_FMT_RGB32, (AVPicture *)frame, pix_fmt, width, height );
1189         }
1190         else
1191         {
1192                 AVPicture output;
1193                 avpicture_fill( &output, buffer, PIX_FMT_YUYV422, width, height );
1194                 img_convert( &output, PIX_FMT_YUYV422, (AVPicture *)frame, pix_fmt, width, height );
1195         }
1196 #endif
1197 }
1198
1199 /** Allocate the image buffer and set it on the frame.
1200 */
1201
1202 static int allocate_buffer( mlt_frame frame, AVCodecContext *codec_context, uint8_t **buffer, mlt_image_format *format, int *width, int *height )
1203 {
1204         int size = 0;
1205
1206         if ( codec_context->width == 0 || codec_context->height == 0 )
1207                 return size;
1208
1209         *width = codec_context->width;
1210         *height = codec_context->height;
1211
1212         if ( codec_context->pix_fmt == PIX_FMT_RGB32 )
1213                 size = *width * ( *height + 1 ) * 4;
1214         else
1215                 size = mlt_image_format_size( *format, *width, *height, NULL );
1216
1217         // Construct the output image
1218         *buffer = mlt_pool_alloc( size );
1219         if ( *buffer )
1220                 mlt_frame_set_image( frame, *buffer, size, mlt_pool_release );
1221         else
1222                 size = 0;
1223
1224         return size;
1225 }
1226
1227 /** Get an image from a frame.
1228 */
1229
1230 static int producer_get_image( mlt_frame frame, uint8_t **buffer, mlt_image_format *format, int *width, int *height, int writable )
1231 {
1232         // Get the producer
1233         producer_avformat self = mlt_frame_pop_service( frame );
1234         mlt_producer producer = self->parent;
1235
1236         // Get the properties from the frame
1237         mlt_properties frame_properties = MLT_FRAME_PROPERTIES( frame );
1238
1239         // Obtain the frame number of this frame
1240         mlt_position position = mlt_properties_get_position( frame_properties, "avformat_position" );
1241
1242         // Get the producer properties
1243         mlt_properties properties = MLT_PRODUCER_PROPERTIES( producer );
1244
1245         pthread_mutex_lock( &self->video_mutex );
1246
1247         // Fetch the video format context
1248         AVFormatContext *context = self->video_format;
1249
1250         // Get the video stream
1251         AVStream *stream = context->streams[ self->video_index ];
1252
1253         // Get codec context
1254         AVCodecContext *codec_context = stream->codec;
1255
1256         // Get the image cache
1257         if ( ! self->image_cache && ! mlt_properties_get_int( properties, "noimagecache" ) )
1258                 self->image_cache = mlt_cache_init();
1259         if ( self->image_cache )
1260         {
1261                 mlt_cache_item item = mlt_cache_get( self->image_cache, (void*) position );
1262                 uint8_t *original = mlt_cache_item_data( item, (int*) format );
1263                 if ( original )
1264                 {
1265                         // Set the resolution
1266                         *width = codec_context->width;
1267                         *height = codec_context->height;
1268
1269                         // Workaround 1088 encodings missing cropping info.
1270                         if ( *height == 1088 && mlt_profile_dar( mlt_service_profile( MLT_PRODUCER_SERVICE( producer ) ) ) == 16.0/9.0 )
1271                                 *height = 1080;
1272
1273                         // Cache hit
1274                         int size = mlt_image_format_size( *format, *width, *height, NULL );
1275                         if ( writable )
1276                         {
1277                                 *buffer = mlt_pool_alloc( size );
1278                                 mlt_frame_set_image( frame, *buffer, size, mlt_pool_release );
1279                                 memcpy( *buffer, original, size );
1280                                 mlt_cache_item_close( item );
1281                         }
1282                         else
1283                         {
1284                                 *buffer = original;
1285                                 mlt_properties_set_data( frame_properties, "avformat.image_cache", item, 0, ( mlt_destructor )mlt_cache_item_close, NULL );
1286                                 mlt_frame_set_image( frame, *buffer, size, NULL );
1287                         }
1288                         self->got_picture = 1;
1289
1290                         goto exit_get_image;
1291                 }
1292         }
1293         // Cache miss
1294         int image_size = 0;
1295
1296         // Packet
1297         AVPacket pkt;
1298
1299         // Special case ffwd handling
1300         int ignore = 0;
1301
1302         // We may want to use the source fps if available
1303         double source_fps = mlt_properties_get_double( properties, "meta.media.frame_rate_num" ) /
1304                 mlt_properties_get_double( properties, "meta.media.frame_rate_den" );
1305
1306         // This is the physical frame position in the source
1307         int req_position = ( int )( position / mlt_producer_get_fps( producer ) * source_fps + 0.5 );
1308
1309         // Determines if we have to decode all frames in a sequence
1310         // Temporary hack to improve intra frame only
1311         int must_decode = strcmp( codec_context->codec->name, "dnxhd" ) &&
1312                                   strcmp( codec_context->codec->name, "dvvideo" ) &&
1313                                   strcmp( codec_context->codec->name, "huffyuv" ) &&
1314                                   strcmp( codec_context->codec->name, "mjpeg" ) &&
1315                                   strcmp( codec_context->codec->name, "rawvideo" );
1316
1317         // Turn on usage of new seek API and PTS for seeking
1318         int use_new_seek = self->seekable &&
1319                 codec_context->codec_id == CODEC_ID_H264 && !strcmp( context->iformat->name, "mpegts" );
1320         if ( mlt_properties_get( properties, "new_seek" ) )
1321                 use_new_seek = mlt_properties_get_int( properties, "new_seek" );
1322
1323         // Seek if necessary
1324         int paused = seek_video( self, position, req_position, must_decode, use_new_seek, &ignore );
1325
1326         // Seek might have reopened the file
1327         context = self->video_format;
1328         stream = context->streams[ self->video_index ];
1329         codec_context = stream->codec;
1330
1331         // Duplicate the last image if necessary
1332         if ( self->av_frame && self->av_frame->linesize[0] && self->got_picture
1333                  && ( paused
1334                           || self->current_position == req_position
1335                           || ( !use_new_seek && self->current_position > req_position ) ) )
1336         {
1337                 // Duplicate it
1338                 if ( ( image_size = allocate_buffer( frame, codec_context, buffer, format, width, height ) ) )
1339                 {
1340                         // Workaround 1088 encodings missing cropping info.
1341                         if ( *height == 1088 && mlt_profile_dar( mlt_service_profile( MLT_PRODUCER_SERVICE( producer ) ) ) == 16.0/9.0 )
1342                                 *height = 1080;
1343 #ifdef VDPAU
1344                         if ( self->vdpau && self->vdpau->buffer )
1345                         {
1346                                 AVPicture picture;
1347                                 picture.data[0] = self->vdpau->buffer;
1348                                 picture.data[2] = self->vdpau->buffer + codec_context->width * codec_context->height;
1349                                 picture.data[1] = self->vdpau->buffer + codec_context->width * codec_context->height * 5 / 4;
1350                                 picture.linesize[0] = codec_context->width;
1351                                 picture.linesize[1] = codec_context->width / 2;
1352                                 picture.linesize[2] = codec_context->width / 2;
1353                                 convert_image( (AVFrame*) &picture, *buffer,
1354                                         PIX_FMT_YUV420P, format, *width, *height, self->colorspace );
1355                         }
1356                         else
1357 #endif
1358                         convert_image( self->av_frame, *buffer, codec_context->pix_fmt,
1359                                 format, *width, *height, self->colorspace );
1360                 }
1361                 else
1362                         mlt_frame_get_image( frame, buffer, format, width, height, writable );
1363         }
1364         else
1365         {
1366                 int ret = 0;
1367                 int int_position = 0;
1368                 int decode_errors = 0;
1369                 int got_picture = 0;
1370
1371                 av_init_packet( &pkt );
1372
1373                 // Construct an AVFrame for YUV422 conversion
1374                 if ( !self->av_frame )
1375                         self->av_frame = avcodec_alloc_frame( );
1376
1377                 while( ret >= 0 && !got_picture )
1378                 {
1379                         // Read a packet
1380                         pthread_mutex_lock( &self->packets_mutex );
1381                         if ( mlt_deque_count( self->vpackets ) )
1382                         {
1383                                 AVPacket *tmp = (AVPacket*) mlt_deque_pop_front( self->vpackets );
1384                                 pkt = *tmp;
1385                                 free( tmp );
1386                         }
1387                         else
1388                         {
1389                                 ret = av_read_frame( context, &pkt );
1390                                 if ( ret >= 0 && !self->seekable && pkt.stream_index == self->audio_index )
1391                                 {
1392                                         if ( !av_dup_packet( &pkt ) )
1393                                         {
1394                                                 AVPacket *tmp = malloc( sizeof(AVPacket) );
1395                                                 *tmp = pkt;
1396                                                 mlt_deque_push_back( self->apackets, tmp );
1397                                         }
1398                                 }
1399                         }
1400                         pthread_mutex_unlock( &self->packets_mutex );
1401
1402                         // We only deal with video from the selected video_index
1403                         if ( ret >= 0 && pkt.stream_index == self->video_index && pkt.size > 0 )
1404                         {
1405                                 // Determine time code of the packet
1406                                 if ( use_new_seek )
1407                                 {
1408                                         int64_t pts = pkt.pts;
1409                                         if ( self->first_pts > 0 )
1410                                                 pts -= self->first_pts;
1411                                         else if ( context->start_time != AV_NOPTS_VALUE )
1412                                                 pts -= context->start_time;
1413                                         int_position = ( int )( av_q2d( stream->time_base ) * pts * source_fps + 0.1 );
1414                                         if ( pkt.pts == AV_NOPTS_VALUE )
1415                                         {
1416                                                 self->invalid_pts_counter++;
1417                                                 if ( self->invalid_pts_counter > 20 )
1418                                                 {
1419                                                         mlt_log_panic( MLT_PRODUCER_SERVICE(producer), "\ainvalid PTS; DISABLING NEW_SEEK!\n" );
1420                                                         mlt_properties_set_int( properties, "new_seek", 0 );
1421                                                         int_position = req_position;
1422                                                         use_new_seek = 0;
1423                                                 }
1424                                         }
1425                                         else
1426                                         {
1427                                                 self->invalid_pts_counter = 0;
1428                                         }
1429                                         mlt_log_debug( MLT_PRODUCER_SERVICE(producer), "pkt.pts %"PRId64" req_pos %d cur_pos %d pkt_pos %d\n",
1430                                                 pkt.pts, req_position, self->current_position, int_position );
1431                                 }
1432                                 else
1433                                 {
1434                                         if ( pkt.dts != AV_NOPTS_VALUE )
1435                                         {
1436                                                 double delay = mlt_properties_get_double( properties, "video_delay" );
1437                                                 int_position = ( int )( ( av_q2d( stream->time_base ) * pkt.dts + delay ) * source_fps + 0.5 );
1438                                                 if ( context->start_time != AV_NOPTS_VALUE )
1439                                                         int_position -= ( int )( context->start_time * source_fps / AV_TIME_BASE + 0.5 );
1440                                                 if ( int_position == self->last_position )
1441                                                         int_position = self->last_position + 1;
1442                                         }
1443                                         mlt_log_debug( MLT_PRODUCER_SERVICE(producer), "pkt.dts %"PRId64" req_pos %d cur_pos %d pkt_pos %d\n",
1444                                                 pkt.dts, req_position, self->current_position, int_position );
1445                                         // Make a dumb assumption on streams that contain wild timestamps
1446                                         if ( abs( req_position - int_position ) > 999 )
1447                                         {
1448                                                 int_position = req_position;
1449                                                 mlt_log_debug( MLT_PRODUCER_SERVICE(producer), " WILD TIMESTAMP!" );
1450                                         }
1451                                 }
1452                                 self->last_position = int_position;
1453
1454                                 // Decode the image
1455                                 if ( must_decode || int_position >= req_position )
1456                                 {
1457 #ifdef VDPAU
1458                                         if ( g_vdpau && self->vdpau )
1459                                         {
1460                                                 if ( g_vdpau->producer != self )
1461                                                 {
1462                                                         vdpau_decoder_close();
1463                                                         vdpau_decoder_init( self );
1464                                                 }
1465                                                 if ( self->vdpau )
1466                                                         self->vdpau->is_decoded = 0;
1467                                         }
1468 #endif
1469                                         codec_context->reordered_opaque = pkt.pts;
1470                                         if ( int_position >= req_position )
1471                                                 codec_context->skip_loop_filter = AVDISCARD_NONE;
1472 #if (LIBAVCODEC_VERSION_INT >= ((52<<16)+(26<<8)+0))
1473                                         ret = avcodec_decode_video2( codec_context, self->av_frame, &got_picture, &pkt );
1474 #else
1475                                         ret = avcodec_decode_video( codec_context, self->av_frame, &got_picture, pkt.data, pkt.size );
1476 #endif
1477                                         // Note: decode may fail at the beginning of MPEGfile (B-frames referencing before first I-frame), so allow a few errors.
1478                                         if ( ret < 0 )
1479                                         {
1480                                                 if ( ++decode_errors <= 10 )
1481                                                         ret = 0;
1482                                         }
1483                                         else
1484                                         {
1485                                                 decode_errors = 0;
1486                                         }
1487                                 }
1488
1489                                 if ( got_picture )
1490                                 {
1491                                         if ( use_new_seek )
1492                                         {
1493                                                 // Determine time code of the packet
1494                                                 int64_t pts = self->av_frame->reordered_opaque;
1495                                                 if ( self->first_pts > 0 )
1496                                                         pts -= self->first_pts;
1497                                                 else if ( context->start_time != AV_NOPTS_VALUE )
1498                                                         pts -= context->start_time;
1499                                                 int_position = ( int )( av_q2d( stream->time_base) * pts * source_fps + 0.1 );
1500                                                 mlt_log_debug( MLT_PRODUCER_SERVICE(producer), "got frame %d, key %d\n", int_position, self->av_frame->key_frame );
1501                                         }
1502                                         // Handle ignore
1503                                         if ( int_position < req_position )
1504                                         {
1505                                                 ignore = 0;
1506                                                 got_picture = 0;
1507                                         }
1508                                         else if ( int_position >= req_position )
1509                                         {
1510                                                 ignore = 0;
1511                                                 codec_context->skip_loop_filter = AVDISCARD_NONE;
1512                                         }
1513                                         else if ( ignore -- )
1514                                         {
1515                                                 got_picture = 0;
1516                                         }
1517                                 }
1518                                 mlt_log_debug( MLT_PRODUCER_SERVICE(producer), " got_pic %d key %d\n", got_picture, pkt.flags & PKT_FLAG_KEY );
1519                         }
1520
1521                         // Now handle the picture if we have one
1522                         if ( got_picture )
1523                         {
1524                                 if ( ( image_size = allocate_buffer( frame, codec_context, buffer, format, width, height ) ) )
1525                                 {
1526                                         // Workaround 1088 encodings missing cropping info.
1527                                         if ( *height == 1088 && mlt_profile_dar( mlt_service_profile( MLT_PRODUCER_SERVICE( producer ) ) ) == 16.0/9.0 )
1528                                                 *height = 1080;
1529 #ifdef VDPAU
1530                                         if ( self->vdpau )
1531                                         {
1532                                                 if ( self->vdpau->is_decoded )
1533                                                 {
1534                                                         struct vdpau_render_state *render = (struct vdpau_render_state*) self->av_frame->data[0];
1535                                                         void *planes[3];
1536                                                         uint32_t pitches[3];
1537                                                         VdpYCbCrFormat dest_format = VDP_YCBCR_FORMAT_YV12;
1538
1539                                                         if ( !self->vdpau->buffer )
1540                                                                 self->vdpau->buffer = mlt_pool_alloc( codec_context->width * codec_context->height * 3 / 2 );
1541                                                         self->av_frame->data[0] = planes[0] = self->vdpau->buffer;
1542                                                         self->av_frame->data[2] = planes[1] = self->vdpau->buffer + codec_context->width * codec_context->height;
1543                                                         self->av_frame->data[1] = planes[2] = self->vdpau->buffer + codec_context->width * codec_context->height * 5 / 4;
1544                                                         self->av_frame->linesize[0] = pitches[0] = codec_context->width;
1545                                                         self->av_frame->linesize[1] = pitches[1] = codec_context->width / 2;
1546                                                         self->av_frame->linesize[2] = pitches[2] = codec_context->width / 2;
1547
1548                                                         VdpStatus status = vdp_surface_get_bits( render->surface, dest_format, planes, pitches );
1549                                                         if ( status == VDP_STATUS_OK )
1550                                                         {
1551                                                                 convert_image( self->av_frame, *buffer, PIX_FMT_YUV420P,
1552                                                                         format, *width, *height, self->colorspace );
1553                                                         }
1554                                                         else
1555                                                         {
1556                                                                 mlt_log_error( MLT_PRODUCER_SERVICE(producer), "VDPAU Error: %s\n", vdp_get_error_string( status ) );
1557                                                                 image_size = self->vdpau->is_decoded = 0;
1558                                                         }
1559                                                 }
1560                                                 else
1561                                                 {
1562                                                         mlt_log_error( MLT_PRODUCER_SERVICE(producer), "VDPAU error in VdpDecoderRender\n" );
1563                                                         image_size = got_picture = 0;
1564                                                 }
1565                                         }
1566                                         else
1567 #endif
1568                                         convert_image( self->av_frame, *buffer, codec_context->pix_fmt,
1569                                                 format, *width, *height, self->colorspace );
1570                                         self->top_field_first |= self->av_frame->top_field_first;
1571                                         self->current_position = int_position;
1572                                         self->got_picture = 1;
1573                                 }
1574                                 else
1575                                 {
1576                                         got_picture = 0;
1577                                 }
1578                         }
1579                         if ( self->seekable || pkt.stream_index != self->audio_index )
1580                                 av_free_packet( &pkt );
1581                 }
1582         }
1583
1584         if ( self->got_picture && image_size > 0 && self->image_cache )
1585         {
1586                 // Copy buffer to image cache
1587                 uint8_t *image = mlt_pool_alloc( image_size );
1588                 memcpy( image, *buffer, image_size );
1589                 mlt_cache_put( self->image_cache, (void*) position, image, *format, mlt_pool_release );
1590         }
1591         // Try to duplicate last image if there was a decoding failure
1592         else if ( !image_size && self->av_frame && self->av_frame->linesize[0] )
1593         {
1594                 // Duplicate it
1595                 if ( ( image_size = allocate_buffer( frame, codec_context, buffer, format, width, height ) ) )
1596                 {
1597                         // Workaround 1088 encodings missing cropping info.
1598                         if ( *height == 1088 && mlt_profile_dar( mlt_service_profile( MLT_PRODUCER_SERVICE( producer ) ) ) == 16.0/9.0 )
1599                                 *height = 1080;
1600 #ifdef VDPAU
1601                         if ( self->vdpau && self->vdpau->buffer )
1602                         {
1603                                 AVPicture picture;
1604                                 picture.data[0] = self->vdpau->buffer;
1605                                 picture.data[2] = self->vdpau->buffer + codec_context->width * codec_context->height;
1606                                 picture.data[1] = self->vdpau->buffer + codec_context->width * codec_context->height * 5 / 4;
1607                                 picture.linesize[0] = codec_context->width;
1608                                 picture.linesize[1] = codec_context->width / 2;
1609                                 picture.linesize[2] = codec_context->width / 2;
1610                                 convert_image( (AVFrame*) &picture, *buffer,
1611                                         PIX_FMT_YUV420P, format, *width, *height, self->colorspace );
1612                         }
1613                         else
1614 #endif
1615                         convert_image( self->av_frame, *buffer, codec_context->pix_fmt,
1616                                 format, *width, *height, self->colorspace );
1617                         self->got_picture = 1;
1618                 }
1619                 else
1620                         mlt_frame_get_image( frame, buffer, format, width, height, writable );
1621         }
1622
1623         // Regardless of speed, we expect to get the next frame (cos we ain't too bright)
1624         self->video_expected = position + 1;
1625
1626 exit_get_image:
1627
1628         pthread_mutex_unlock( &self->video_mutex );
1629
1630         // Set the progressive flag
1631         if ( mlt_properties_get( properties, "force_progressive" ) )
1632                 mlt_properties_set_int( frame_properties, "progressive", !!mlt_properties_get_int( properties, "force_progressive" ) );
1633         else if ( self->av_frame )
1634                 mlt_properties_set_int( frame_properties, "progressive", !self->av_frame->interlaced_frame );
1635
1636         // Set the field order property for this frame
1637         if ( mlt_properties_get( properties, "force_tff" ) )
1638                 mlt_properties_set_int( frame_properties, "top_field_first", !!mlt_properties_get_int( properties, "force_tff" ) );
1639         else
1640                 mlt_properties_set_int( frame_properties, "top_field_first", self->top_field_first );
1641
1642         // Set immutable properties of the selected track's (or overridden) source attributes.
1643         mlt_service_lock( MLT_PRODUCER_SERVICE( producer ) );
1644         mlt_properties_set_int( properties, "meta.media.top_field_first", self->top_field_first );
1645         mlt_properties_set_int( properties, "meta.media.progressive", mlt_properties_get_int( frame_properties, "progressive" ) );
1646         mlt_service_unlock( MLT_PRODUCER_SERVICE( producer ) );
1647
1648         return !self->got_picture;
1649 }
1650
1651 /** Process properties as AVOptions and apply to AV context obj
1652 */
1653
1654 static void apply_properties( void *obj, mlt_properties properties, int flags )
1655 {
1656         int i;
1657         int count = mlt_properties_count( properties );
1658         for ( i = 0; i < count; i++ )
1659         {
1660                 const char *opt_name = mlt_properties_get_name( properties, i );
1661                 const AVOption *opt = av_find_opt( obj, opt_name, NULL, flags, flags );
1662                 if ( opt_name && mlt_properties_get( properties, opt_name ) )
1663                 {
1664                         if ( opt )
1665 #if LIBAVCODEC_VERSION_INT >= ((52<<16)+(7<<8)+0)
1666                                 av_set_string3( obj, opt_name, mlt_properties_get( properties, opt_name), 0, NULL );
1667 #elif LIBAVCODEC_VERSION_INT >= ((51<<16)+(59<<8)+0)
1668                                 av_set_string2( obj, opt_name, mlt_properties_get( properties, opt_name), 0 );
1669 #else
1670                                 av_set_string( obj, opt_name, mlt_properties_get( properties, opt_name) );
1671 #endif
1672                 }
1673         }
1674 }
1675
1676 /** Initialize the video codec context.
1677  */
1678
1679 static int video_codec_init( producer_avformat self, int index, mlt_properties properties )
1680 {
1681         // Initialise the codec if necessary
1682         if ( !self->video_codec )
1683         {
1684                 // Get the video stream
1685                 AVStream *stream = self->video_format->streams[ index ];
1686
1687                 // Get codec context
1688                 AVCodecContext *codec_context = stream->codec;
1689
1690                 // Find the codec
1691                 AVCodec *codec = avcodec_find_decoder( codec_context->codec_id );
1692 #ifdef VDPAU
1693                 if ( codec_context->codec_id == CODEC_ID_H264 )
1694                 {
1695                         if ( ( codec = avcodec_find_decoder_by_name( "h264_vdpau" ) ) )
1696                         {
1697                                 if ( vdpau_init( self ) )
1698                                 {
1699                                         self->video_codec = codec_context;
1700                                         if ( !vdpau_decoder_init( self ) )
1701                                                 vdpau_decoder_close();
1702                                 }
1703                         }
1704                         if ( !self->vdpau )
1705                                 codec = avcodec_find_decoder( codec_context->codec_id );
1706                 }
1707 #endif
1708
1709                 // Initialise multi-threading
1710                 int thread_count = mlt_properties_get_int( properties, "threads" );
1711                 if ( thread_count == 0 && getenv( "MLT_AVFORMAT_THREADS" ) )
1712                         thread_count = atoi( getenv( "MLT_AVFORMAT_THREADS" ) );
1713                 if ( thread_count > 1 )
1714                         codec_context->thread_count = thread_count;
1715
1716                 // If we don't have a codec and we can't initialise it, we can't do much more...
1717                 avformat_lock( );
1718                 if ( codec && avcodec_open( codec_context, codec ) >= 0 )
1719                 {
1720                         // Now store the codec with its destructor
1721                         self->video_codec = codec_context;
1722                 }
1723                 else
1724                 {
1725                         // Remember that we can't use this later
1726                         self->video_index = -1;
1727                         avformat_unlock( );
1728                         return 0;
1729                 }
1730                 avformat_unlock( );
1731
1732                 // Process properties as AVOptions
1733                 apply_properties( codec_context, properties, AV_OPT_FLAG_VIDEO_PARAM | AV_OPT_FLAG_DECODING_PARAM );
1734 #if LIBAVCODEC_VERSION_MAJOR > 52
1735                 if ( codec->priv_class && codec_context->priv_data )
1736                         apply_properties( codec_context->priv_data, properties, AV_OPT_FLAG_VIDEO_PARAM | AV_OPT_FLAG_DECODING_PARAM );
1737 #endif
1738
1739                 // Reset some image properties
1740                 mlt_properties_set_int( properties, "width", self->video_codec->width );
1741                 mlt_properties_set_int( properties, "height", self->video_codec->height );
1742                 // For DV, we'll just use the saved aspect ratio
1743                 if ( codec_context->codec_id != CODEC_ID_DVVIDEO )
1744                         get_aspect_ratio( properties, stream, self->video_codec, NULL );
1745
1746                 // Determine the fps first from the codec
1747                 double source_fps = (double) self->video_codec->time_base.den /
1748                                                                    ( self->video_codec->time_base.num == 0 ? 1 : self->video_codec->time_base.num );
1749
1750                 if ( mlt_properties_get( properties, "force_fps" ) )
1751                 {
1752                         source_fps = mlt_properties_get_double( properties, "force_fps" );
1753                         stream->time_base = av_d2q( source_fps, 1024 );
1754                         mlt_properties_set_int( properties, "meta.media.frame_rate_num", stream->time_base.num );
1755                         mlt_properties_set_int( properties, "meta.media.frame_rate_den", stream->time_base.den );
1756                 }
1757                 else
1758                 {
1759                         // If the muxer reports a frame rate different than the codec
1760 #if LIBAVFORMAT_VERSION_INT >= ((52<<16)+(42<<8)+0)
1761                         double muxer_fps = av_q2d( stream->avg_frame_rate );
1762                         if ( isnan( muxer_fps ) || muxer_fps == 0 )
1763                                 muxer_fps = av_q2d( stream->r_frame_rate );
1764 #else
1765                         double muxer_fps = av_q2d( stream->r_frame_rate );
1766 #endif
1767                         // Choose the lesser - the wrong tends to be off by some multiple of 10
1768                         source_fps = FFMIN( source_fps, muxer_fps );
1769                         if ( source_fps >= 1.0 && ( source_fps < muxer_fps || isnan( muxer_fps ) ) )
1770                         {
1771                                 mlt_properties_set_int( properties, "meta.media.frame_rate_num", self->video_codec->time_base.den );
1772                                 mlt_properties_set_int( properties, "meta.media.frame_rate_den", self->video_codec->time_base.num == 0 ? 1 : self->video_codec->time_base.num );
1773                         }
1774                         else if ( muxer_fps > 0 )
1775                         {
1776                                 AVRational frame_rate = stream->r_frame_rate;
1777                                 // With my samples when r_frame_rate != 1000 but avg_frame_rate is valid,
1778                                 // avg_frame_rate gives some approximate value that does not well match the media.
1779                                 // Also, on my sample where r_frame_rate = 1000, using avg_frame_rate directly
1780                                 // results in some very choppy output, but some value slightly different works
1781                                 // great.
1782 #if LIBAVFORMAT_VERSION_INT >= ((52<<16)+(42<<8)+0)
1783                                 if ( av_q2d( stream->r_frame_rate ) >= 1000 && av_q2d( stream->avg_frame_rate ) > 0 )
1784                                         frame_rate = av_d2q( av_q2d( stream->avg_frame_rate ), 1024 );
1785 #endif
1786                                 mlt_properties_set_int( properties, "meta.media.frame_rate_num", frame_rate.num );
1787                                 mlt_properties_set_int( properties, "meta.media.frame_rate_den", frame_rate.den );
1788                         }
1789                         else
1790                         {
1791                                 source_fps = mlt_producer_get_fps( self->parent );
1792                                 AVRational frame_rate = av_d2q( source_fps, 255 );
1793                                 mlt_properties_set_int( properties, "meta.media.frame_rate_num", frame_rate.num );
1794                                 mlt_properties_set_int( properties, "meta.media.frame_rate_den", frame_rate.den );
1795                         }
1796                 }
1797
1798                 // source_fps is deprecated in favor of meta.media.frame_rate_num and .frame_rate_den
1799                 if ( source_fps > 0 )
1800                         mlt_properties_set_double( properties, "source_fps", source_fps );
1801                 else
1802                         mlt_properties_set_double( properties, "source_fps", mlt_producer_get_fps( self->parent ) );
1803
1804                 // Set the YUV colorspace from override or detect
1805                 self->colorspace = mlt_properties_get_int( properties, "force_colorspace" );
1806 #if LIBAVCODEC_VERSION_INT > ((52<<16)+(28<<8)+0)
1807                 if ( ! self->colorspace )
1808                 {
1809                         switch ( self->video_codec->colorspace )
1810                         {
1811                         case AVCOL_SPC_SMPTE240M:
1812                                 self->colorspace = 240;
1813                                 break;
1814                         case AVCOL_SPC_BT470BG:
1815                         case AVCOL_SPC_SMPTE170M:
1816                                 self->colorspace = 601;
1817                                 break;
1818                         case AVCOL_SPC_BT709:
1819                                 self->colorspace = 709;
1820                                 break;
1821                         default:
1822                                 // This is a heuristic Charles Poynton suggests in "Digital Video and HDTV"
1823                                 self->colorspace = self->video_codec->width * self->video_codec->height > 750000 ? 709 : 601;
1824                                 break;
1825                         }
1826                 }
1827 #endif
1828                 // Let apps get chosen colorspace
1829                 mlt_properties_set_int( properties, "meta.media.colorspace", self->colorspace );
1830         }
1831         return self->video_codec && self->video_index > -1;
1832 }
1833
1834 /** Set up video handling.
1835 */
1836
1837 static void producer_set_up_video( producer_avformat self, mlt_frame frame )
1838 {
1839         // Get the producer
1840         mlt_producer producer = self->parent;
1841
1842         // Get the properties
1843         mlt_properties properties = MLT_PRODUCER_PROPERTIES( producer );
1844
1845         // Fetch the video format context
1846         AVFormatContext *context = self->video_format;
1847
1848         // Get the video_index
1849         int index = mlt_properties_get_int( properties, "video_index" );
1850
1851         // Reopen the file if necessary
1852         if ( !context && index > -1 )
1853         {
1854                 producer_open( self, mlt_service_profile( MLT_PRODUCER_SERVICE(producer) ),
1855                         mlt_properties_get( properties, "resource" ) );
1856                 context = self->video_format;
1857         }
1858
1859         // Exception handling for video_index
1860         if ( context && index >= (int) context->nb_streams )
1861         {
1862                 // Get the last video stream
1863                 for ( index = context->nb_streams - 1;
1864                           index >= 0 && context->streams[ index ]->codec->codec_type != CODEC_TYPE_VIDEO;
1865                           index-- );
1866                 mlt_properties_set_int( properties, "video_index", index );
1867         }
1868         if ( context && index > -1 && context->streams[ index ]->codec->codec_type != CODEC_TYPE_VIDEO )
1869         {
1870                 // Invalidate the video stream
1871                 index = -1;
1872                 mlt_properties_set_int( properties, "video_index", index );
1873         }
1874
1875         // Update the video properties if the index changed
1876         if ( index != self->video_index )
1877         {
1878                 // Reset the video properties if the index changed
1879                 self->video_index = index;
1880                 if ( self->video_codec )
1881                 {
1882                         avformat_lock();
1883                         avcodec_close( self->video_codec );
1884                         avformat_unlock();
1885                 }
1886                 self->video_codec = NULL;
1887         }
1888
1889         // Get the frame properties
1890         mlt_properties frame_properties = MLT_FRAME_PROPERTIES( frame );
1891
1892         // Get the codec
1893         if ( context && index > -1 && video_codec_init( self, index, properties ) )
1894         {
1895                 // Set the frame properties
1896                 double force_aspect_ratio = mlt_properties_get_double( properties, "force_aspect_ratio" );
1897                 double aspect_ratio = ( force_aspect_ratio > 0.0 ) ?
1898                         force_aspect_ratio : mlt_properties_get_double( properties, "aspect_ratio" );
1899
1900                 // Set the width and height
1901                 mlt_properties_set_int( frame_properties, "width", self->video_codec->width );
1902                 mlt_properties_set_int( frame_properties, "height", self->video_codec->height );
1903                 // real_width and real_height are deprecated in favor of meta.media.width and .height
1904                 mlt_properties_set_int( properties, "meta.media.width", self->video_codec->width );
1905                 mlt_properties_set_int( properties, "meta.media.height", self->video_codec->height );
1906                 mlt_properties_set_int( frame_properties, "real_width", self->video_codec->width );
1907                 mlt_properties_set_int( frame_properties, "real_height", self->video_codec->height );
1908                 mlt_properties_set_double( frame_properties, "aspect_ratio", aspect_ratio );
1909                 mlt_properties_set_int( frame_properties, "colorspace", self->colorspace );
1910
1911                 // Workaround 1088 encodings missing cropping info.
1912                 if ( self->video_codec->height == 1088 && mlt_profile_dar( mlt_service_profile( MLT_PRODUCER_SERVICE( producer ) ) ) == 16.0/9.0 )
1913                 {
1914                         mlt_properties_set_int( properties, "meta.media.height", 1080 );
1915                         mlt_properties_set_int( frame_properties, "real_height", 1080 );
1916                 }
1917
1918                 // Add our image operation
1919                 mlt_frame_push_service( frame, self );
1920                 mlt_frame_push_get_image( frame, producer_get_image );
1921         }
1922         else
1923         {
1924                 // If something failed, use test card image
1925                 mlt_properties_set_int( frame_properties, "test_image", 1 );
1926         }
1927 }
1928
1929 static int seek_audio( producer_avformat self, mlt_position position, double timecode, int *ignore )
1930 {
1931         int paused = 0;
1932
1933         // Seek if necessary
1934         if ( self->seekable && position != self->audio_expected )
1935         {
1936                 if ( position + 1 == self->audio_expected )
1937                 {
1938                         // We're paused - silence required
1939                         paused = 1;
1940                 }
1941                 else if ( !self->seekable && position > self->audio_expected && ( position - self->audio_expected ) < 250 )
1942                 {
1943                         // Fast forward - seeking is inefficient for small distances - just ignore following frames
1944                         *ignore = position - self->audio_expected;
1945                 }
1946                 else if ( position < self->audio_expected || position - self->audio_expected >= 12 )
1947                 {
1948                         AVFormatContext *context = self->audio_format;
1949                         int64_t timestamp = ( int64_t )( timecode * AV_TIME_BASE + 0.5 );
1950                         if ( context->start_time != AV_NOPTS_VALUE )
1951                                 timestamp += context->start_time;
1952                         if ( timestamp < 0 )
1953                                 timestamp = 0;
1954
1955                         // Set to the real timecode
1956                         if ( av_seek_frame( context, -1, timestamp, AVSEEK_FLAG_BACKWARD ) != 0 )
1957                                 paused = 1;
1958
1959                         // Clear the usage in the audio buffer
1960                         int i = MAX_AUDIO_STREAMS + 1;
1961                         while ( --i )
1962                                 self->audio_used[i - 1] = 0;
1963                 }
1964         }
1965         return paused;
1966 }
1967
1968 static int sample_bytes( AVCodecContext *context )
1969 {
1970 #if LIBAVCODEC_VERSION_MAJOR > 52
1971         return av_get_bits_per_sample_fmt( context->sample_fmt ) / 8;
1972 #else
1973         return av_get_bits_per_sample_format( context->sample_fmt ) / 8;
1974 #endif
1975 }
1976
1977 static int decode_audio( producer_avformat self, int *ignore, AVPacket pkt, int channels, int samples, double timecode, double fps )
1978 {
1979         // Fetch the audio_format
1980         AVFormatContext *context = self->audio_format;
1981
1982         // Get the current stream index
1983         int index = pkt.stream_index;
1984
1985         // Get codec context
1986         AVCodecContext *codec_context = self->audio_codec[ index ];
1987
1988         // Obtain the resample context if it exists (not always needed)
1989         ReSampleContext *resample = self->audio_resample[ index ];
1990
1991         // Obtain the audio buffers
1992         uint8_t *audio_buffer = self->audio_buffer[ index ];
1993         uint8_t *decode_buffer = self->decode_buffer[ index ];
1994
1995         int audio_used = self->audio_used[ index ];
1996         uint8_t *ptr = pkt.data;
1997         int len = pkt.size;
1998         int ret = 0;
1999
2000         while ( ptr && ret >= 0 && len > 0 )
2001         {
2002                 int sizeof_sample = resample? sizeof( int16_t ) : sample_bytes( codec_context );
2003                 int data_size = self->audio_buffer_size[ index ];
2004
2005                 // Decode the audio
2006 #if (LIBAVCODEC_VERSION_INT >= ((52<<16)+(26<<8)+0))
2007                 ret = avcodec_decode_audio3( codec_context, (int16_t*) decode_buffer, &data_size, &pkt );
2008 #elif (LIBAVCODEC_VERSION_INT >= ((51<<16)+(29<<8)+0))
2009                 ret = avcodec_decode_audio2( codec_context, decode_buffer, &data_size, ptr, len );
2010 #else
2011                 ret = avcodec_decode_audio( codec_context, decode_buffer, &data_size, ptr, len );
2012 #endif
2013                 if ( ret < 0 )
2014                 {
2015                         mlt_log_warning( MLT_PRODUCER_SERVICE(self->parent), "audio decoding error %d\n", ret );
2016                         break;
2017                 }
2018
2019                 pkt.size = len -= ret;
2020                 pkt.data = ptr += ret;
2021
2022                 // If decoded successfully
2023                 if ( data_size > 0 )
2024                 {
2025                         // Figure out how many samples will be needed after resampling
2026                         int convert_samples = data_size / codec_context->channels / sample_bytes( codec_context );
2027                         int samples_needed = self->resample_factor * convert_samples;
2028
2029                         // Resize audio buffer to prevent overflow
2030                         if ( ( audio_used + samples_needed ) * channels * sizeof_sample > self->audio_buffer_size[ index ] )
2031                         {
2032                                 self->audio_buffer_size[ index ] = ( audio_used + samples_needed * 2 ) * channels * sizeof_sample;
2033                                 audio_buffer = self->audio_buffer[ index ] = mlt_pool_realloc( audio_buffer, self->audio_buffer_size[ index ] );
2034                         }
2035                         if ( resample )
2036                         {
2037                                 // Copy to audio buffer while resampling
2038                                 uint8_t *source = decode_buffer;
2039                                 uint8_t *dest = &audio_buffer[ audio_used * channels * sizeof_sample ];
2040                                 audio_used += audio_resample( resample, (short*) dest, (short*) source, convert_samples );
2041                         }
2042                         else
2043                         {
2044                                 // Straight copy to audio buffer
2045                                 memcpy( &audio_buffer[ audio_used * codec_context->channels * sizeof_sample ], decode_buffer, data_size );
2046                                 audio_used += convert_samples;
2047                         }
2048
2049                         // Handle ignore
2050                         while ( *ignore && audio_used > samples )
2051                         {
2052                                 *ignore -= 1;
2053                                 audio_used -= samples;
2054                                 memmove( audio_buffer, &audio_buffer[ samples * (resample? channels : codec_context->channels) * sizeof_sample ],
2055                                                  audio_used * sizeof_sample );
2056                         }
2057                 }
2058         }
2059
2060         // If we're behind, ignore this packet
2061         if ( pkt.pts >= 0 )
2062         {
2063                 double current_pts = av_q2d( context->streams[ index ]->time_base ) * pkt.pts;
2064                 int req_position = ( int )( timecode * fps + 0.5 );
2065                 int int_position = ( int )( current_pts * fps + 0.5 );
2066                 if ( context->start_time != AV_NOPTS_VALUE )
2067                         int_position -= ( int )( fps * context->start_time / AV_TIME_BASE + 0.5 );
2068
2069                 if ( *ignore == 0 )
2070                 {
2071                         if ( int_position < req_position )
2072                                 // We are behind, so skip some
2073                                 *ignore = 1;
2074
2075                         // We use nb_streams in this test because the tolerance is dependent
2076                         // on the interleaving of all streams esp. when there is more than
2077                         // one audio stream.
2078                         else if ( int_position > req_position + context->nb_streams )
2079                                 // We are ahead, so seek backwards some more
2080                                 seek_audio( self, req_position, timecode - 1.0, ignore );
2081                 }
2082         }
2083
2084         self->audio_used[ index ] = audio_used;
2085
2086         return ret;
2087 }
2088
2089 /** Get the audio from a frame.
2090 */
2091 static int producer_get_audio( mlt_frame frame, void **buffer, mlt_audio_format *format, int *frequency, int *channels, int *samples )
2092 {
2093         // Get the producer
2094         producer_avformat self = mlt_frame_pop_audio( frame );
2095
2096         pthread_mutex_lock( &self->audio_mutex );
2097
2098         // Obtain the frame number of this frame
2099         mlt_position position = mlt_properties_get_position( MLT_FRAME_PROPERTIES( frame ), "avformat_position" );
2100
2101         // Calculate the real time code
2102         double real_timecode = producer_time_of_frame( self->parent, position );
2103
2104         // Get the producer fps
2105         double fps = mlt_producer_get_fps( self->parent );
2106
2107         // Number of frames to ignore (for ffwd)
2108         int ignore[ MAX_AUDIO_STREAMS ] = { 0 };
2109
2110         // Flag for paused (silence)
2111         int paused = seek_audio( self, position, real_timecode, &ignore[0] );
2112
2113         // Initialize ignore for all streams from the seek return value
2114         int i = MAX_AUDIO_STREAMS;
2115         while ( i-- )
2116                 ignore[i] = ignore[0];
2117
2118         // Fetch the audio_format
2119         AVFormatContext *context = self->audio_format;
2120
2121         int sizeof_sample = sizeof( int16_t );
2122
2123         // Determine the tracks to use
2124         int index = self->audio_index;
2125         int index_max = self->audio_index + 1;
2126         if ( self->audio_index == INT_MAX )
2127         {
2128                 index = 0;
2129                 index_max = context->nb_streams;
2130                 *channels = self->total_channels;
2131                 *samples = *samples * FFMAX( self->max_frequency, *frequency ) / *frequency;
2132                 *frequency = FFMAX( self->max_frequency, *frequency );
2133         }
2134
2135         // Initialize the resamplers and buffers
2136         for ( ; index < index_max; index++ )
2137         {
2138                 // Get codec context
2139                 AVCodecContext *codec_context = self->audio_codec[ index ];
2140
2141                 if ( codec_context && !self->audio_buffer[ index ] )
2142                 {
2143                         // Check for resample and create if necessary
2144                         if ( codec_context->channels <= 2 )
2145                         {
2146                                 // Determine by how much resampling will increase number of samples
2147                                 double resample_factor = self->audio_index == INT_MAX ? 1 : (double) *channels / codec_context->channels;
2148                                 resample_factor *= (double) *frequency / codec_context->sample_rate;
2149                                 if ( resample_factor > self->resample_factor )
2150                                         self->resample_factor = resample_factor;
2151
2152                                 // Create the resampler
2153 #if (LIBAVCODEC_VERSION_INT >= ((52<<16)+(15<<8)+0))
2154                                 self->audio_resample[ index ] = av_audio_resample_init(
2155                                         self->audio_index == INT_MAX ? codec_context->channels : *channels,
2156                                         codec_context->channels, *frequency, codec_context->sample_rate,
2157                                         SAMPLE_FMT_S16, codec_context->sample_fmt, 16, 10, 0, 0.8 );
2158 #else
2159                                 self->audio_resample[ index ] = audio_resample_init(
2160                                         self->audio_index == INT_MAX ? codec_context->channels : *channels,
2161                                         codec_context->channels, *frequency, codec_context->sample_rate );
2162 #endif
2163                         }
2164                         else
2165                         {
2166                                 codec_context->request_channels = self->audio_index == INT_MAX ? codec_context->channels : *channels;
2167                                 sizeof_sample = sample_bytes( codec_context );
2168                         }
2169
2170                         // Check for audio buffer and create if necessary
2171                         self->audio_buffer_size[ index ] = AVCODEC_MAX_AUDIO_FRAME_SIZE * sizeof_sample;
2172                         self->audio_buffer[ index ] = mlt_pool_alloc( self->audio_buffer_size[ index ] );
2173
2174                         // Check for decoder buffer and create if necessary
2175                         self->decode_buffer[ index ] = av_malloc( self->audio_buffer_size[ index ] );
2176                 }
2177         }
2178
2179         // Get the audio if required
2180         if ( !paused )
2181         {
2182                 int ret = 0;
2183                 int got_audio = 0;
2184                 AVPacket pkt;
2185
2186                 av_init_packet( &pkt );
2187
2188                 // If not resampling, give consumer more than requested.
2189                 // It requested number samples based on requested frame rate.
2190                 // Do not clean this up with a samples *= ...!
2191                 if ( self->audio_index != INT_MAX && ! self->audio_resample[ self->audio_index ] )
2192                         *samples = *samples * self->audio_codec[ self->audio_index ]->sample_rate / *frequency;
2193
2194                 while ( ret >= 0 && !got_audio )
2195                 {
2196                         // Check if the buffer already contains the samples required
2197                         if ( self->audio_index != INT_MAX &&
2198                                  self->audio_used[ self->audio_index ] >= *samples &&
2199                                  ignore[ self->audio_index ] == 0 )
2200                         {
2201                                 got_audio = 1;
2202                                 break;
2203                         }
2204                         else if ( self->audio_index == INT_MAX )
2205                         {
2206                                 // Check if there is enough audio for all streams
2207                                 got_audio = 1;
2208                                 for ( index = 0; got_audio && index < context->nb_streams; index++ )
2209                                         if ( ( self->audio_codec[ index ] && self->audio_used[ index ] < *samples ) || ignore[ index ] )
2210                                                 got_audio = 0;
2211                                 if ( got_audio )
2212                                         break;
2213                         }
2214
2215                         // Read a packet
2216                         pthread_mutex_lock( &self->packets_mutex );
2217                         if ( mlt_deque_count( self->apackets ) )
2218                         {
2219                                 AVPacket *tmp = (AVPacket*) mlt_deque_pop_front( self->apackets );
2220                                 pkt = *tmp;
2221                                 free( tmp );
2222                         }
2223                         else
2224                         {
2225                                 ret = av_read_frame( context, &pkt );
2226                                 if ( ret >= 0 && !self->seekable && pkt.stream_index == self->video_index )
2227                                 {
2228                                         if ( !av_dup_packet( &pkt ) )
2229                                         {
2230                                                 AVPacket *tmp = malloc( sizeof(AVPacket) );
2231                                                 *tmp = pkt;
2232                                                 mlt_deque_push_back( self->vpackets, tmp );
2233                                         }
2234                                 }
2235                         }
2236                         pthread_mutex_unlock( &self->packets_mutex );
2237
2238                         // We only deal with audio from the selected audio index
2239                         index = pkt.stream_index;
2240                         if ( ret >= 0 && pkt.data && pkt.size > 0 && ( index == self->audio_index ||
2241                                  ( self->audio_index == INT_MAX && context->streams[ index ]->codec->codec_type == CODEC_TYPE_AUDIO ) ) )
2242                         {
2243                                 int channels2 = ( self->audio_index == INT_MAX || !self->audio_resample[index] ) ?
2244                                         self->audio_codec[index]->channels : *channels;
2245                                 ret = decode_audio( self, &ignore[index], pkt, channels2, *samples, real_timecode, fps );
2246                         }
2247
2248                         if ( self->seekable || index != self->video_index )
2249                                 av_free_packet( &pkt );
2250
2251                 }
2252
2253                 // Set some additional return values
2254                 *format = mlt_audio_s16;
2255                 if ( self->audio_index != INT_MAX && !self->audio_resample[ self->audio_index ] )
2256                 {
2257                         index = self->audio_index;
2258                         *channels = self->audio_codec[ index ]->channels;
2259                         *frequency = self->audio_codec[ index ]->sample_rate;
2260                         *format = self->audio_codec[ index ]->sample_fmt == SAMPLE_FMT_S32 ? mlt_audio_s32le
2261                                 : self->audio_codec[ index ]->sample_fmt == SAMPLE_FMT_FLT ? mlt_audio_f32le
2262                                 : mlt_audio_s16;
2263                         sizeof_sample = sample_bytes( self->audio_codec[ index ] );
2264                 }
2265                 else if ( self->audio_index == INT_MAX )
2266                 {
2267                         // This only works if all audio tracks have the same sample format.
2268                         for ( index = 0; index < index_max; index++ )
2269                                 if ( self->audio_codec[ index ] && !self->audio_resample[ index ] )
2270                                 {
2271                                         *format = self->audio_codec[ index ]->sample_fmt == SAMPLE_FMT_S32 ? mlt_audio_s32le
2272                                                 : self->audio_codec[ index ]->sample_fmt == SAMPLE_FMT_FLT ? mlt_audio_f32le
2273                                                 : mlt_audio_s16;
2274                                         sizeof_sample = sample_bytes( self->audio_codec[ index ] );
2275                                         break;
2276                                 }
2277                 }
2278
2279                 // Allocate and set the frame's audio buffer
2280                 int size = mlt_audio_format_size( *format, *samples, *channels );
2281                 *buffer = mlt_pool_alloc( size );
2282                 mlt_frame_set_audio( frame, *buffer, *format, size, mlt_pool_release );
2283
2284                 // Interleave tracks if audio_index=all
2285                 if ( self->audio_index == INT_MAX )
2286                 {
2287                         uint8_t *dest = *buffer;
2288                         int i;
2289                         for ( i = 0; i < *samples; i++ )
2290                         {
2291                                 for ( index = 0; index < index_max; index++ )
2292                                 if ( self->audio_codec[ index ] )
2293                                 {
2294                                         int current_channels = self->audio_codec[ index ]->channels;
2295                                         uint8_t *src = self->audio_buffer[ index ] + i * current_channels * sizeof_sample;
2296                                         memcpy( dest, src, current_channels * sizeof_sample );
2297                                         dest += current_channels * sizeof_sample;
2298                                 }
2299                         }
2300                         for ( index = 0; index < index_max; index++ )
2301                         if ( self->audio_codec[ index ] && self->audio_used[ index ] >= *samples )
2302                         {
2303                                 int current_channels = self->audio_codec[ index ]->channels;
2304                                 uint8_t *src = self->audio_buffer[ index ] + *samples * current_channels * sizeof_sample;
2305                                 self->audio_used[index] -= *samples;
2306                                 memmove( self->audio_buffer[ index ], src, self->audio_used[ index ] * current_channels * sizeof_sample );
2307                         }
2308                 }
2309                 // Copy a single track to the output buffer
2310                 else
2311                 {
2312                         index = self->audio_index;
2313
2314                         // Now handle the audio if we have enough
2315                         if ( self->audio_used[ index ] > 0 )
2316                         {
2317                                 uint8_t *src = self->audio_buffer[ index ];
2318                                 // copy samples from audio_buffer
2319                                 size = self->audio_used[ index ] < *samples ? self->audio_used[ index ] : *samples;
2320                                 memcpy( *buffer, src, size * *channels * sizeof_sample );
2321                                 // supply the remaining requested samples as silence
2322                                 if ( *samples > self->audio_used[ index ] )
2323                                         memset( *buffer + size * *channels * sizeof_sample, 0, ( *samples - self->audio_used[ index ] ) * *channels * sizeof_sample );
2324                                 // reposition the samples within audio_buffer
2325                                 self->audio_used[ index ] -= size;
2326                                 memmove( src, src + size * *channels * sizeof_sample, self->audio_used[ index ] * *channels * sizeof_sample );
2327                         }
2328                         else
2329                         {
2330                                 // Otherwise fill with silence
2331                                 memset( *buffer, 0, *samples * *channels * sizeof_sample );
2332                         }
2333                 }
2334         }
2335         else
2336         {
2337                 // Get silence and don't touch the context
2338                 mlt_frame_get_audio( frame, buffer, format, frequency, channels, samples );
2339         }
2340
2341         // Regardless of speed (other than paused), we expect to get the next frame
2342         if ( !paused )
2343                 self->audio_expected = position + 1;
2344
2345         pthread_mutex_unlock( &self->audio_mutex );
2346
2347         return 0;
2348 }
2349
2350 /** Initialize the audio codec context.
2351 */
2352
2353 static int audio_codec_init( producer_avformat self, int index, mlt_properties properties )
2354 {
2355         // Initialise the codec if necessary
2356         if ( !self->audio_codec[ index ] )
2357         {
2358                 // Get codec context
2359                 AVCodecContext *codec_context = self->audio_format->streams[index]->codec;
2360
2361                 // Find the codec
2362                 AVCodec *codec = avcodec_find_decoder( codec_context->codec_id );
2363
2364                 // If we don't have a codec and we can't initialise it, we can't do much more...
2365                 avformat_lock( );
2366                 if ( codec && avcodec_open( codec_context, codec ) >= 0 )
2367                 {
2368                         // Now store the codec with its destructor
2369                         if ( self->audio_codec[ index ] )
2370                                 avcodec_close( self->audio_codec[ index ] );
2371                         self->audio_codec[ index ] = codec_context;
2372                 }
2373                 else
2374                 {
2375                         // Remember that we can't use self later
2376                         self->audio_index = -1;
2377                 }
2378                 avformat_unlock( );
2379
2380                 // Process properties as AVOptions
2381                 apply_properties( codec_context, properties, AV_OPT_FLAG_AUDIO_PARAM | AV_OPT_FLAG_DECODING_PARAM );
2382 #if LIBAVCODEC_VERSION_MAJOR > 52
2383                 if ( codec && codec->priv_class && codec_context->priv_data )
2384                         apply_properties( codec_context->priv_data, properties, AV_OPT_FLAG_AUDIO_PARAM | AV_OPT_FLAG_DECODING_PARAM );
2385 #endif
2386         }
2387         return self->audio_codec[ index ] && self->audio_index > -1;
2388 }
2389
2390 /** Set up audio handling.
2391 */
2392
2393 static void producer_set_up_audio( producer_avformat self, mlt_frame frame )
2394 {
2395         // Get the producer
2396         mlt_producer producer = self->parent;
2397
2398         // Get the properties
2399         mlt_properties properties = MLT_PRODUCER_PROPERTIES( producer );
2400
2401         // Fetch the audio format context
2402         AVFormatContext *context = self->audio_format;
2403
2404         mlt_properties frame_properties = MLT_FRAME_PROPERTIES( frame );
2405
2406         // Get the audio_index
2407         int index = mlt_properties_get_int( properties, "audio_index" );
2408
2409         // Handle all audio tracks
2410         if ( self->audio_index > -1 &&
2411              mlt_properties_get( properties, "audio_index" ) &&
2412              !strcmp( mlt_properties_get( properties, "audio_index" ), "all" ) )
2413                 index = INT_MAX;
2414
2415         // Reopen the file if necessary
2416         if ( !context && self->audio_index > -1 && index > -1 )
2417         {
2418                 producer_open( self, mlt_service_profile( MLT_PRODUCER_SERVICE(producer) ),
2419                         mlt_properties_get( properties, "resource" ) );
2420                 context = self->audio_format;
2421         }
2422
2423         // Exception handling for audio_index
2424         if ( context && index >= (int) context->nb_streams && index < INT_MAX )
2425         {
2426                 for ( index = context->nb_streams - 1;
2427                           index >= 0 && context->streams[ index ]->codec->codec_type != CODEC_TYPE_AUDIO;
2428                           index-- );
2429                 mlt_properties_set_int( properties, "audio_index", index );
2430         }
2431         if ( context && index > -1 && index < INT_MAX &&
2432                  context->streams[ index ]->codec->codec_type != CODEC_TYPE_AUDIO )
2433         {
2434                 index = self->audio_index;
2435                 mlt_properties_set_int( properties, "audio_index", index );
2436         }
2437
2438         // Update the audio properties if the index changed
2439         if ( context && index > -1 && index != self->audio_index )
2440         {
2441                 if ( self->audio_codec[ self->audio_index ] )
2442                 {
2443                         avformat_lock();
2444                         avcodec_close( self->audio_codec[ self->audio_index ] );
2445                         avformat_unlock();
2446                 }
2447                 self->audio_codec[ self->audio_index ] = NULL;
2448         }
2449         if ( self->audio_index != -1 )
2450                 self->audio_index = index;
2451         else
2452                 index = -1;
2453
2454         // Get the codec(s)
2455         if ( context && index == INT_MAX )
2456         {
2457                 mlt_properties_set_int( frame_properties, "audio_frequency", self->max_frequency );
2458                 mlt_properties_set_int( frame_properties, "audio_channels", self->total_channels );
2459                 for ( index = 0; index < context->nb_streams; index++ )
2460                 {
2461                         if ( context->streams[ index ]->codec->codec_type == CODEC_TYPE_AUDIO )
2462                                 audio_codec_init( self, index, properties );
2463                 }
2464         }
2465         else if ( context && index > -1 && audio_codec_init( self, index, properties ) )
2466         {
2467                 // Set the frame properties
2468                 if ( index < INT_MAX )
2469                 {
2470                         mlt_properties_set_int( frame_properties, "frequency", self->audio_codec[ index ]->sample_rate );
2471                         mlt_properties_set_int( frame_properties, "channels", self->audio_codec[ index ]->channels );
2472                 }
2473         }
2474         if ( context && index > -1 )
2475         {
2476                 // Add our audio operation
2477                 mlt_frame_push_audio( frame, self );
2478                 mlt_frame_push_audio( frame, producer_get_audio );
2479         }
2480 }
2481
2482 /** Our get frame implementation.
2483 */
2484
2485 static int producer_get_frame( mlt_producer producer, mlt_frame_ptr frame, int index )
2486 {
2487         // Access the private data
2488         mlt_service service = MLT_PRODUCER_SERVICE( producer );
2489         mlt_cache_item cache_item = mlt_service_cache_get( service, "producer_avformat" );
2490         producer_avformat self = mlt_cache_item_data( cache_item, NULL );
2491
2492         // If cache miss
2493         if ( !self )
2494         {
2495                 self = calloc( 1, sizeof( struct producer_avformat_s ) );
2496                 producer->child = self;
2497                 self->parent = producer;
2498                 mlt_service_cache_put( service, "producer_avformat", self, 0, (mlt_destructor) producer_avformat_close );
2499                 cache_item = mlt_service_cache_get( service, "producer_avformat" );
2500         }
2501
2502         // Create an empty frame
2503         *frame = mlt_frame_init( service);
2504
2505         if ( *frame )
2506         {
2507                 mlt_properties_set_data( MLT_FRAME_PROPERTIES(*frame), "avformat_cache", cache_item, 0, (mlt_destructor) mlt_cache_item_close, NULL );
2508         }
2509         else
2510         {
2511                 mlt_cache_item_close( cache_item );
2512                 return 1;
2513         }
2514
2515         // Update timecode on the frame we're creating
2516         mlt_frame_set_position( *frame, mlt_producer_position( producer ) );
2517
2518         // Set the position of this producer
2519         mlt_position position = self->seekable ? mlt_producer_frame( producer ) : self->nonseek_position++;
2520         mlt_properties_set_position( MLT_FRAME_PROPERTIES( *frame ), "avformat_position", position );
2521
2522         // Set up the video
2523         producer_set_up_video( self, *frame );
2524
2525         // Set up the audio
2526         producer_set_up_audio( self, *frame );
2527
2528         // Calculate the next timecode
2529         mlt_producer_prepare_next( producer );
2530
2531         return 0;
2532 }
2533
2534 static void producer_avformat_close( producer_avformat self )
2535 {
2536         mlt_log_debug( NULL, "producer_avformat_close\n" );
2537
2538         // Cleanup av contexts
2539         av_free( self->av_frame );
2540         avformat_lock();
2541         int i;
2542         for ( i = 0; i < MAX_AUDIO_STREAMS; i++ )
2543         {
2544                 if ( self->audio_resample[i] )
2545                         audio_resample_close( self->audio_resample[i] );
2546                 mlt_pool_release( self->audio_buffer[i] );
2547                 av_free( self->decode_buffer[i] );
2548                 if ( self->audio_codec[i] )
2549                         avcodec_close( self->audio_codec[i] );
2550         }
2551         if ( self->video_codec )
2552                 avcodec_close( self->video_codec );
2553         // Close the file
2554         if ( self->dummy_context )
2555                 av_close_input_file( self->dummy_context );
2556         if ( self->seekable && self->audio_format )
2557                 av_close_input_file( self->audio_format );
2558         if ( self->video_format )
2559                 av_close_input_file( self->video_format );
2560         avformat_unlock();
2561 #ifdef VDPAU
2562         vdpau_producer_close( self );
2563 #endif
2564         if ( self->image_cache )
2565                 mlt_cache_close( self->image_cache );
2566
2567         // Cleanup the mutexes
2568         pthread_mutex_destroy( &self->audio_mutex );
2569         pthread_mutex_destroy( &self->video_mutex );
2570         pthread_mutex_destroy( &self->packets_mutex );
2571
2572         // Cleanup the packet queues
2573         AVPacket *pkt;
2574         while ( ( pkt = mlt_deque_pop_back( self->apackets ) ) )
2575         {
2576                 av_free_packet( pkt );
2577                 free( pkt );
2578         }
2579         while ( ( pkt = mlt_deque_pop_back( self->vpackets ) ) )
2580         {
2581                 av_free_packet( pkt );
2582                 free( pkt );
2583         }
2584
2585         free( self );
2586 }
2587
2588 static void producer_close( mlt_producer parent )
2589 {
2590         // Remove this instance from the cache
2591         mlt_service_cache_purge( MLT_PRODUCER_SERVICE(parent) );
2592
2593         // Close the parent
2594         parent->close = NULL;
2595         mlt_producer_close( parent );
2596
2597         // Free the memory
2598         free( parent );
2599 }